io: wait for incoming client in socket test
[qemu/ar7.git] / docs / qmp-events.txt
blob4e3eb9e77a784fb622f55963506a51088d9fcb16
1                    QEMU Machine Protocol Events
2                    ============================
4 ACPI_DEVICE_OST
5 ---------------
7 Emitted when guest executes ACPI _OST method.
9  - data: ACPIOSTInfo type as described in qapi-schema.json
11 { "event": "ACPI_DEVICE_OST",
12      "data": { "device": "d1", "slot": "0", "slot-type": "DIMM", "source": 1, "status": 0 } }
14 BALLOON_CHANGE
15 --------------
17 Emitted when the guest changes the actual BALLOON level. This
18 value is equivalent to the 'actual' field return by the
19 'query-balloon' command
21 Data:
23 - "actual": actual level of the guest memory balloon in bytes (json-number)
25 Example:
27 { "event": "BALLOON_CHANGE",
28     "data": { "actual": 944766976 },
29     "timestamp": { "seconds": 1267020223, "microseconds": 435656 } }
31 Note: this event is rate-limited.
33 BLOCK_IMAGE_CORRUPTED
34 ---------------------
36 Emitted when a disk image is being marked corrupt. The image can be
37 identified by its device or node name. The 'device' field is always
38 present for compatibility reasons, but it can be empty ("") if the
39 image does not have a device name associated.
41 Data:
43 - "device":    Device name (json-string)
44 - "node-name": Node name (json-string, optional)
45 - "msg":       Informative message (e.g., reason for the corruption)
46                (json-string)
47 - "offset":    If the corruption resulted from an image access, this
48                is the host's access offset into the image
49                (json-int, optional)
50 - "size":      If the corruption resulted from an image access, this
51                is the access size (json-int, optional)
53 Example:
55 { "event": "BLOCK_IMAGE_CORRUPTED",
56     "data": { "device": "ide0-hd0", "node-name": "node0",
57         "msg": "Prevented active L1 table overwrite", "offset": 196608,
58         "size": 65536 },
59     "timestamp": { "seconds": 1378126126, "microseconds": 966463 } }
61 BLOCK_IO_ERROR
62 --------------
64 Emitted when a disk I/O error occurs.
66 Data:
68 - "device": device name (json-string)
69 - "operation": I/O operation (json-string, "read" or "write")
70 - "action": action that has been taken, it's one of the following (json-string):
71     "ignore": error has been ignored
72     "report": error has been reported to the device
73     "stop": the VM is going to stop because of the error
75 Example:
77 { "event": "BLOCK_IO_ERROR",
78     "data": { "device": "ide0-hd1",
79               "operation": "write",
80               "action": "stop" },
81     "timestamp": { "seconds": 1265044230, "microseconds": 450486 } }
83 Note: If action is "stop", a STOP event will eventually follow the
84 BLOCK_IO_ERROR event.
86 BLOCK_JOB_CANCELLED
87 -------------------
89 Emitted when a block job has been cancelled.
91 Data:
93 - "type":     Job type (json-string; "stream" for image streaming
94                                      "commit" for block commit)
95 - "device":   Device name (json-string)
96 - "len":      Maximum progress value (json-int)
97 - "offset":   Current progress value (json-int)
98               On success this is equal to len.
99               On failure this is less than len.
100 - "speed":    Rate limit, bytes per second (json-int)
102 Example:
104 { "event": "BLOCK_JOB_CANCELLED",
105      "data": { "type": "stream", "device": "virtio-disk0",
106                "len": 10737418240, "offset": 134217728,
107                "speed": 0 },
108      "timestamp": { "seconds": 1267061043, "microseconds": 959568 } }
110 BLOCK_JOB_COMPLETED
111 -------------------
113 Emitted when a block job has completed.
115 Data:
117 - "type":     Job type (json-string; "stream" for image streaming
118                                      "commit" for block commit)
119 - "device":   Device name (json-string)
120 - "len":      Maximum progress value (json-int)
121 - "offset":   Current progress value (json-int)
122               On success this is equal to len.
123               On failure this is less than len.
124 - "speed":    Rate limit, bytes per second (json-int)
125 - "error":    Error message (json-string, optional)
126               Only present on failure.  This field contains a human-readable
127               error message.  There are no semantics other than that streaming
128               has failed and clients should not try to interpret the error
129               string.
131 Example:
133 { "event": "BLOCK_JOB_COMPLETED",
134      "data": { "type": "stream", "device": "virtio-disk0",
135                "len": 10737418240, "offset": 10737418240,
136                "speed": 0 },
137      "timestamp": { "seconds": 1267061043, "microseconds": 959568 } }
139 BLOCK_JOB_ERROR
140 ---------------
142 Emitted when a block job encounters an error.
144 Data:
146 - "device": device name (json-string)
147 - "operation": I/O operation (json-string, "read" or "write")
148 - "action": action that has been taken, it's one of the following (json-string):
149     "ignore": error has been ignored, the job may fail later
150     "report": error will be reported and the job canceled
151     "stop": error caused job to be paused
153 Example:
155 { "event": "BLOCK_JOB_ERROR",
156     "data": { "device": "ide0-hd1",
157               "operation": "write",
158               "action": "stop" },
159     "timestamp": { "seconds": 1265044230, "microseconds": 450486 } }
161 BLOCK_JOB_READY
162 ---------------
164 Emitted when a block job is ready to complete.
166 Data:
168 - "type":     Job type (json-string; "stream" for image streaming
169                                      "commit" for block commit)
170 - "device":   Device name (json-string)
171 - "len":      Maximum progress value (json-int)
172 - "offset":   Current progress value (json-int)
173               On success this is equal to len.
174               On failure this is less than len.
175 - "speed":    Rate limit, bytes per second (json-int)
177 Example:
179 { "event": "BLOCK_JOB_READY",
180     "data": { "device": "drive0", "type": "mirror", "speed": 0,
181               "len": 2097152, "offset": 2097152 }
182     "timestamp": { "seconds": 1265044230, "microseconds": 450486 } }
184 Note: The "ready to complete" status is always reset by a BLOCK_JOB_ERROR
185 event.
187 DEVICE_DELETED
188 --------------
190 Emitted whenever the device removal completion is acknowledged
191 by the guest.
192 At this point, it's safe to reuse the specified device ID.
193 Device removal can be initiated by the guest or by HMP/QMP commands.
195 Data:
197 - "device": device name (json-string, optional)
198 - "path": device path (json-string)
200 { "event": "DEVICE_DELETED",
201   "data": { "device": "virtio-net-pci-0",
202             "path": "/machine/peripheral/virtio-net-pci-0" },
203   "timestamp": { "seconds": 1265044230, "microseconds": 450486 } }
205 DEVICE_TRAY_MOVED
206 -----------------
208 It's emitted whenever the tray of a removable device is moved by the guest
209 or by HMP/QMP commands.
211 Data:
213 - "device": device name (json-string)
214 - "tray-open": true if the tray has been opened or false if it has been closed
215                (json-bool)
217 { "event": "DEVICE_TRAY_MOVED",
218   "data": { "device": "ide1-cd0",
219             "tray-open": true
220   },
221   "timestamp": { "seconds": 1265044230, "microseconds": 450486 } }
223 DUMP_COMPLETED
224 --------------
226 Emitted when the guest has finished one memory dump.
228 Data:
230 - "result": DumpQueryResult type described in qapi-schema.json
231 - "error": Error message when dump failed. This is only a
232   human-readable string provided when dump failed. It should not be
233   parsed in any way (json-string, optional)
235 Example:
237 { "event": "DUMP_COMPLETED",
238   "data": {"result": {"total": 1090650112, "status": "completed",
239                       "completed": 1090650112} } }
241 GUEST_PANICKED
242 --------------
244 Emitted when guest OS panic is detected.
246 Data:
248 - "action": Action that has been taken (json-string, currently always "pause").
250 Example:
252 { "event": "GUEST_PANICKED",
253      "data": { "action": "pause" } }
255 MEM_UNPLUG_ERROR
256 --------------------
257 Emitted when memory hot unplug error occurs.
259 Data:
261 - "device": device name (json-string)
262 - "msg": Informative message (e.g., reason for the error) (json-string)
264 Example:
266 { "event": "MEM_UNPLUG_ERROR"
267   "data": { "device": "dimm1",
268             "msg": "acpi: device unplug for unsupported device"
269   },
270   "timestamp": { "seconds": 1265044230, "microseconds": 450486 } }
272 NIC_RX_FILTER_CHANGED
273 ---------------------
275 The event is emitted once until the query command is executed,
276 the first event will always be emitted.
278 Data:
280 - "name": net client name (json-string)
281 - "path": device path (json-string)
283 { "event": "NIC_RX_FILTER_CHANGED",
284   "data": { "name": "vnet0",
285             "path": "/machine/peripheral/vnet0/virtio-backend" },
286   "timestamp": { "seconds": 1368697518, "microseconds": 326866 } }
289 POWERDOWN
290 ---------
292 Emitted when the Virtual Machine is powered down through the power
293 control system, such as via ACPI.
295 Data: None.
297 Example:
299 { "event": "POWERDOWN",
300     "timestamp": { "seconds": 1267040730, "microseconds": 682951 } }
302 QUORUM_FAILURE
303 --------------
305 Emitted by the Quorum block driver if it fails to establish a quorum.
307 Data:
309 - "reference":     device name if defined else node name.
310 - "sector-num":    Number of the first sector of the failed read operation.
311 - "sectors-count": Failed read operation sector count.
313 Example:
315 { "event": "QUORUM_FAILURE",
316      "data": { "reference": "usr1", "sector-num": 345435, "sectors-count": 5 },
317      "timestamp": { "seconds": 1344522075, "microseconds": 745528 } }
319 Note: this event is rate-limited.
321 QUORUM_REPORT_BAD
322 -----------------
324 Emitted to report a corruption of a Quorum file.
326 Data:
328 - "error":         Error message (json-string, optional)
329                    Only present on failure.  This field contains a human-readable
330                    error message.  There are no semantics other than that the
331                    block layer reported an error and clients should not try to
332                    interpret the error string.
333 - "node-name":     The graph node name of the block driver state.
334 - "sector-num":    Number of the first sector of the failed read operation.
335 - "sectors-count": Failed read operation sector count.
337 Example:
339 { "event": "QUORUM_REPORT_BAD",
340      "data": { "node-name": "1.raw", "sector-num": 345435, "sectors-count": 5 },
341      "timestamp": { "seconds": 1344522075, "microseconds": 745528 } }
343 Note: this event is rate-limited.
345 RESET
346 -----
348 Emitted when the Virtual Machine is reset.
350 Data: None.
352 Example:
354 { "event": "RESET",
355     "timestamp": { "seconds": 1267041653, "microseconds": 9518 } }
357 RESUME
358 ------
360 Emitted when the Virtual Machine resumes execution.
362 Data: None.
364 Example:
366 { "event": "RESUME",
367     "timestamp": { "seconds": 1271770767, "microseconds": 582542 } }
369 RTC_CHANGE
370 ----------
372 Emitted when the guest changes the RTC time.
374 Data:
376 - "offset": Offset between base RTC clock (as specified by -rtc base), and
377 new RTC clock value (json-number)
379 Example:
381 { "event": "RTC_CHANGE",
382     "data": { "offset": 78 },
383     "timestamp": { "seconds": 1267020223, "microseconds": 435656 } }
385 Note: this event is rate-limited.
387 SHUTDOWN
388 --------
390 Emitted when the Virtual Machine has shut down, indicating that qemu
391 is about to exit.
393 Data: None.
395 Example:
397 { "event": "SHUTDOWN",
398     "timestamp": { "seconds": 1267040730, "microseconds": 682951 } }
400 Note: If the command-line option "-no-shutdown" has been specified, a STOP
401 event will eventually follow the SHUTDOWN event.
403 SPICE_CONNECTED
404 ---------------
406 Emitted when a SPICE client connects.
408 Data:
410 - "server": Server information (json-object)
411   - "host": IP address (json-string)
412   - "port": port number (json-string)
413   - "family": address family (json-string, "ipv4" or "ipv6")
414 - "client": Client information (json-object)
415   - "host": IP address (json-string)
416   - "port": port number (json-string)
417   - "family": address family (json-string, "ipv4" or "ipv6")
419 Example:
421 { "timestamp": {"seconds": 1290688046, "microseconds": 388707},
422   "event": "SPICE_CONNECTED",
423   "data": {
424     "server": { "port": "5920", "family": "ipv4", "host": "127.0.0.1"},
425     "client": {"port": "52873", "family": "ipv4", "host": "127.0.0.1"}
428 SPICE_DISCONNECTED
429 ------------------
431 Emitted when a SPICE client disconnects.
433 Data:
435 - "server": Server information (json-object)
436   - "host": IP address (json-string)
437   - "port": port number (json-string)
438   - "family": address family (json-string, "ipv4" or "ipv6")
439 - "client": Client information (json-object)
440   - "host": IP address (json-string)
441   - "port": port number (json-string)
442   - "family": address family (json-string, "ipv4" or "ipv6")
444 Example:
446 { "timestamp": {"seconds": 1290688046, "microseconds": 388707},
447   "event": "SPICE_DISCONNECTED",
448   "data": {
449     "server": { "port": "5920", "family": "ipv4", "host": "127.0.0.1"},
450     "client": {"port": "52873", "family": "ipv4", "host": "127.0.0.1"}
453 SPICE_INITIALIZED
454 -----------------
456 Emitted after initial handshake and authentication takes place (if any)
457 and the SPICE channel is up and running
459 Data:
461 - "server": Server information (json-object)
462   - "host": IP address (json-string)
463   - "port": port number (json-string)
464   - "family": address family (json-string, "ipv4" or "ipv6")
465   - "auth": authentication method (json-string, optional)
466 - "client": Client information (json-object)
467   - "host": IP address (json-string)
468   - "port": port number (json-string)
469   - "family": address family (json-string, "ipv4" or "ipv6")
470   - "connection-id": spice connection id.  All channels with the same id
471                      belong to the same spice session (json-int)
472   - "channel-type": channel type.  "1" is the main control channel, filter for
473                     this one if you want track spice sessions only (json-int)
474   - "channel-id": channel id.  Usually "0", might be different needed when
475                   multiple channels of the same type exist, such as multiple
476                   display channels in a multihead setup (json-int)
477   - "tls": whevener the channel is encrypted (json-bool)
479 Example:
481 { "timestamp": {"seconds": 1290688046, "microseconds": 417172},
482   "event": "SPICE_INITIALIZED",
483   "data": {"server": {"auth": "spice", "port": "5921",
484                       "family": "ipv4", "host": "127.0.0.1"},
485            "client": {"port": "49004", "family": "ipv4", "channel-type": 3,
486                       "connection-id": 1804289383, "host": "127.0.0.1",
487                       "channel-id": 0, "tls": true}
490 SPICE_MIGRATE_COMPLETED
491 -----------------------
493 Emitted when SPICE migration has completed
495 Data: None.
497 Example:
499 { "timestamp": {"seconds": 1290688046, "microseconds": 417172},
500   "event": "SPICE_MIGRATE_COMPLETED" }
502 MIGRATION
503 ---------
505 Emitted when a migration event happens
507 Data: None.
509  - "status": migration status
510      See MigrationStatus in ~/qapi-schema.json for possible values
512 Example:
514 {"timestamp": {"seconds": 1432121972, "microseconds": 744001},
515  "event": "MIGRATION", "data": {"status": "completed"}}
517 MIGRATION_PASS
518 --------------
520 Emitted from the source side of a migration at the start of each pass
521 (when it syncs the dirty bitmap)
523 Data: None.
525   - "pass": An incrementing count (starting at 1 on the first pass)
527 Example:
528 {"timestamp": {"seconds": 1449669631, "microseconds": 239225},
529  "event": "MIGRATION_PASS", "data": {"pass": 2}}
531 STOP
532 ----
534 Emitted when the Virtual Machine is stopped.
536 Data: None.
538 Example:
540 { "event": "STOP",
541     "timestamp": { "seconds": 1267041730, "microseconds": 281295 } }
543 SUSPEND
544 -------
546 Emitted when guest enters S3 state.
548 Data: None.
550 Example:
552 { "event": "SUSPEND",
553      "timestamp": { "seconds": 1344456160, "microseconds": 309119 } }
555 SUSPEND_DISK
556 ------------
558 Emitted when the guest makes a request to enter S4 state.
560 Data: None.
562 Example:
564 { "event": "SUSPEND_DISK",
565      "timestamp": { "seconds": 1344456160, "microseconds": 309119 } }
567 Note: QEMU shuts down when entering S4 state.
569 VNC_CONNECTED
570 -------------
572 Emitted when a VNC client establishes a connection.
574 Data:
576 - "server": Server information (json-object)
577   - "host": IP address (json-string)
578   - "service": port number (json-string)
579   - "family": address family (json-string, "ipv4" or "ipv6")
580   - "auth": authentication method (json-string, optional)
581 - "client": Client information (json-object)
582   - "host": IP address (json-string)
583   - "service": port number (json-string)
584   - "family": address family (json-string, "ipv4" or "ipv6")
586 Example:
588 { "event": "VNC_CONNECTED",
589     "data": {
590         "server": { "auth": "sasl", "family": "ipv4",
591                     "service": "5901", "host": "0.0.0.0" },
592         "client": { "family": "ipv4", "service": "58425",
593                     "host": "127.0.0.1" } },
594     "timestamp": { "seconds": 1262976601, "microseconds": 975795 } }
597 Note: This event is emitted before any authentication takes place, thus
598 the authentication ID is not provided.
600 VNC_DISCONNECTED
601 ----------------
603 Emitted when the connection is closed.
605 Data:
607 - "server": Server information (json-object)
608   - "host": IP address (json-string)
609   - "service": port number (json-string)
610   - "family": address family (json-string, "ipv4" or "ipv6")
611   - "auth": authentication method (json-string, optional)
612 - "client": Client information (json-object)
613   - "host": IP address (json-string)
614   - "service": port number (json-string)
615   - "family": address family (json-string, "ipv4" or "ipv6")
616   - "x509_dname": TLS dname (json-string, optional)
617   - "sasl_username": SASL username (json-string, optional)
619 Example:
621 { "event": "VNC_DISCONNECTED",
622     "data": {
623         "server": { "auth": "sasl", "family": "ipv4",
624                     "service": "5901", "host": "0.0.0.0" },
625         "client": { "family": "ipv4", "service": "58425",
626                     "host": "127.0.0.1", "sasl_username": "luiz" } },
627     "timestamp": { "seconds": 1262976601, "microseconds": 975795 } }
629 VNC_INITIALIZED
630 ---------------
632 Emitted after authentication takes place (if any) and the VNC session is
633 made active.
635 Data:
637 - "server": Server information (json-object)
638   - "host": IP address (json-string)
639   - "service": port number (json-string)
640   - "family": address family (json-string, "ipv4" or "ipv6")
641   - "auth": authentication method (json-string, optional)
642 - "client": Client information (json-object)
643   - "host": IP address (json-string)
644   - "service": port number (json-string)
645   - "family": address family (json-string, "ipv4" or "ipv6")
646   - "x509_dname": TLS dname (json-string, optional)
647   - "sasl_username": SASL username (json-string, optional)
649 Example:
651 { "event": "VNC_INITIALIZED",
652     "data": {
653         "server": { "auth": "sasl", "family": "ipv4",
654                     "service": "5901", "host": "0.0.0.0"},
655         "client": { "family": "ipv4", "service": "46089",
656                     "host": "127.0.0.1", "sasl_username": "luiz" } },
657         "timestamp": { "seconds": 1263475302, "microseconds": 150772 } }
659 VSERPORT_CHANGE
660 ---------------
662 Emitted when the guest opens or closes a virtio-serial port.
664 Data:
666 - "id": device identifier of the virtio-serial port (json-string)
667 - "open": true if the guest has opened the virtio-serial port (json-bool)
669 Example:
671 { "event": "VSERPORT_CHANGE",
672     "data": { "id": "channel0", "open": true },
673     "timestamp": { "seconds": 1401385907, "microseconds": 422329 } }
675 Note: this event is rate-limited separately for each "id".
677 WAKEUP
678 ------
680 Emitted when the guest has woken up from S3 and is running.
682 Data: None.
684 Example:
686 { "event": "WAKEUP",
687      "timestamp": { "seconds": 1344522075, "microseconds": 745528 } }
689 WATCHDOG
690 --------
692 Emitted when the watchdog device's timer is expired.
694 Data:
696 - "action": Action that has been taken, it's one of the following (json-string):
697             "reset", "shutdown", "poweroff", "pause", "debug", or "none"
699 Example:
701 { "event": "WATCHDOG",
702      "data": { "action": "reset" },
703      "timestamp": { "seconds": 1267061043, "microseconds": 959568 } }
705 Note: If action is "reset", "shutdown", or "pause" the WATCHDOG event is
706 followed respectively by the RESET, SHUTDOWN, or STOP events.
708 Note: this event is rate-limited.