path: root/docs/qmp-events.txt

                   QEMU Machine Protocol Events
                   ============================

ACPI_DEVICE_OST
---------------

Emitted when guest executes ACPI _OST method.

 - data: ACPIOSTInfo type as described in qapi-schema.json

{ "event": "ACPI_DEVICE_OST",
     "data": { "device": "d1", "slot": "0", "slot-type": "DIMM", "source": 1, "status": 0 } }

BALLOON_CHANGE
--------------

Emitted when the guest changes the actual BALLOON level. This
value is equivalent to the 'actual' field return by the
'query-balloon' command

Data:

- "actual": actual level of the guest memory balloon in bytes (json-number)

Example:

{ "event": "BALLOON_CHANGE",
    "data": { "actual": 944766976 },
    "timestamp": { "seconds": 1267020223, "microseconds": 435656 } }

Note: this event is rate-limited.

DUMP_COMPLETED
--------------

Emitted when the guest has finished one memory dump.

Data:

- "result": DumpQueryResult type described in qapi-schema.json
- "error": Error message when dump failed. This is only a
  human-readable string provided when dump failed. It should not be
  parsed in any way (json-string, optional)

Example:

{ "event": "DUMP_COMPLETED",
  "data": {"result": {"total": 1090650112, "status": "completed",
                      "completed": 1090650112} } }

GUEST_PANICKED
--------------

Emitted when guest OS panic is detected.

Data:

- "action": Action that has been taken (json-string, currently always "pause").

Example:

{ "event": "GUEST_PANICKED",
     "data": { "action": "pause" } }

MEM_UNPLUG_ERROR
--------------------
Emitted when memory hot unplug error occurs.

Data:

- "device": device name (json-string)
- "msg": Informative message (e.g., reason for the error) (json-string)

Example:

{ "event": "MEM_UNPLUG_ERROR"
  "data": { "device": "dimm1",
            "msg": "acpi: device unplug for unsupported device"
  },
  "timestamp": { "seconds": 1265044230, "microseconds": 450486 } }

QUORUM_FAILURE
--------------

Emitted by the Quorum block driver if it fails to establish a quorum.

Data:

- "reference":     device name if defined else node name.
- "sector-num":    Number of the first sector of the failed read operation.
- "sectors-count": Failed read operation sector count.

Example:

{ "event": "QUORUM_FAILURE",
     "data": { "reference": "usr1", "sector-num": 345435, "sectors-count": 5 },
     "timestamp": { "seconds": 1344522075, "microseconds": 745528 } }

Note: this event is rate-limited.

QUORUM_REPORT_BAD
-----------------

Emitted to report a corruption of a Quorum file.

Data:

- "type":          Quorum operation type
- "error":         Error message (json-string, optional)
                   Only present on failure.  This field contains a human-readable
                   error message.  There are no semantics other than that the
                   block layer reported an error and clients should not try to
                   interpret the error string.
- "node-name":     The graph node name of the block driver state.
- "sector-num":    Number of the first sector of the failed read operation.
- "sectors-count": Failed read operation sector count.

Example:

Read operation:
{ "event": "QUORUM_REPORT_BAD",
     "data": { "node-name": "node0", "sector-num": 345435, "sectors-count": 5,
               "type": "read" },
     "timestamp": { "seconds": 1344522075, "microseconds": 745528 } }

Flush operation:
{ "event": "QUORUM_REPORT_BAD",
     "data": { "node-name": "node0", "sector-num": 0, "sectors-count": 2097120,
               "type": "flush", "error": "Broken pipe" },
     "timestamp": { "seconds": 1456406829, "microseconds": 291763 } }

Note: this event is rate-limited.

SPICE_CONNECTED
---------------

Emitted when a SPICE client connects.

Data:

- "server": Server information (json-object)
  - "host": IP address (json-string)
  - "port": port number (json-string)
  - "family": address family (json-string, "ipv4" or "ipv6")
- "client": Client information (json-object)
  - "host": IP address (json-string)
  - "port": port number (json-string)
  - "family": address family (json-string, "ipv4" or "ipv6")

Example:

{ "timestamp": {"seconds": 1290688046, "microseconds": 388707},
  "event": "SPICE_CONNECTED",
  "data": {
    "server": { "port": "5920", "family": "ipv4", "host": "127.0.0.1"},
    "client": {"port": "52873", "family": "ipv4", "host": "127.0.0.1"}
}}

SPICE_DISCONNECTED
------------------

Emitted when a SPICE client disconnects.

Data:

- "server": Server information (json-object)
  - "host": IP address (json-string)
  - "port": port number (json-string)
  - "family": address family (json-string, "ipv4" or "ipv6")
- "client": Client information (json-object)
  - "host": IP address (json-string)
  - "port": port number (json-string)
  - "family": address family (json-string, "ipv4" or "ipv6")

Example:

{ "timestamp": {"seconds": 1290688046, "microseconds": 388707},
  "event": "SPICE_DISCONNECTED",
  "data": {
    "server": { "port": "5920", "family": "ipv4", "host": "127.0.0.1"},
    "client": {"port": "52873", "family": "ipv4", "host": "127.0.0.1"}
}}

SPICE_INITIALIZED
-----------------

Emitted after initial handshake and authentication takes place (if any)
and the SPICE channel is up and running

Data:

- "server": Server information (json-object)
  - "host": IP address (json-string)
  - "port": port number (json-string)
  - "family": address family (json-string, "ipv4" or "ipv6")
  - "auth": authentication method (json-string, optional)
- "client": Client information (json-object)
  - "host": IP address (json-string)
  - "port": port number (json-string)
  - "family": address family (json-string, "ipv4" or "ipv6")
  - "connection-id": spice connection id.  All channels with the same id
                     belong to the same spice session (json-int)
  - "channel-type": channel type.  "1" is the main control channel, filter for
                    this one if you want track spice sessions only (json-int)
  - "channel-id": channel id.  Usually "0", might be different needed when
                  multiple channels of the same type exist, such as multiple
                  display channels in a multihead setup (json-int)
  - "tls": whevener the channel is encrypted (json-bool)

Example:

{ "timestamp": {"seconds": 1290688046, "microseconds": 417172},
  "event": "SPICE_INITIALIZED",
  "data": {"server": {"auth": "spice", "port": "5921",
                      "family": "ipv4", "host": "127.0.0.1"},
           "client": {"port": "49004", "family": "ipv4", "channel-type": 3,
                      "connection-id": 1804289383, "host": "127.0.0.1",
                      "channel-id": 0, "tls": true}
}}

SPICE_MIGRATE_COMPLETED
-----------------------

Emitted when SPICE migration has completed

Data: None.

Example:

{ "timestamp": {"seconds": 1290688046, "microseconds": 417172},
  "event": "SPICE_MIGRATE_COMPLETED" }

MIGRATION
---------

Emitted when a migration event happens

Data: None.

 - "status": migration status
     See MigrationStatus in ~/qapi-schema.json for possible values

Example:

{"timestamp": {"seconds": 1432121972, "microseconds": 744001},
 "event": "MIGRATION", "data": {"status": "completed"}}

MIGRATION_PASS
--------------

Emitted from the source side of a migration at the start of each pass
(when it syncs the dirty bitmap)

Data: None.

  - "pass": An incrementing count (starting at 1 on the first pass)

Example:
{"timestamp": {"seconds": 1449669631, "microseconds": 239225},
 "event": "MIGRATION_PASS", "data": {"pass": 2}}

VNC_DISCONNECTED
----------------

Emitted when the connection is closed.

Data:

- "server": Server information (json-object)
  - "host": IP address (json-string)
  - "service": port number (json-string)
  - "family": address family (json-string, "ipv4" or "ipv6")
  - "auth": authentication method (json-string, optional)
- "client": Client information (json-object)
  - "host": IP address (json-string)
  - "service": port number (json-string)
  - "family": address family (json-string, "ipv4" or "ipv6")
  - "x509_dname": TLS dname (json-string, optional)
  - "sasl_username": SASL username (json-string, optional)

Example:

{ "event": "VNC_DISCONNECTED",
    "data": {
        "server": { "auth": "sasl", "family": "ipv4",
                    "service": "5901", "host": "0.0.0.0" },
        "client": { "family": "ipv4", "service": "58425",
                    "host": "127.0.0.1", "sasl_username": "luiz" } },
    "timestamp": { "seconds": 1262976601, "microseconds": 975795 } }

VSERPORT_CHANGE
---------------

Emitted when the guest opens or closes a virtio-serial port.

Data:

- "id": device identifier of the virtio-serial port (json-string)
- "open": true if the guest has opened the virtio-serial port (json-bool)

Example:

{ "event": "VSERPORT_CHANGE",
    "data": { "id": "channel0", "open": true },
    "timestamp": { "seconds": 1401385907, "microseconds": 422329 } }

Note: this event is rate-limited separately for each "id".