qemu-e2k/QMP
Luiz Capitulino cedebdacd2 QMP: Introduce qmp-shell
This is a very simple shell written in Python for demonstration
purposes.

Unfortunately it's a bit awkward right now, as the user has
to specify the arguments names and the printed data can be
a raw dictionary or list, like the following example:

(QEMU) pci_add pci_addr=auto type=nic
{u'slot': 5, u'bus': 0, u'domain': 0, u'function': 0}
(QEMU)

It's worth to note that the shell is broken into two files.
One is the shell itself, the other is the QMP class which
handles the communication with QEMU.

Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-12-03 09:41:25 -06:00
..
qmp-events.txt QMP: Introduce qmp-events.txt 2009-12-03 09:41:24 -06:00
qmp-shell QMP: Introduce qmp-shell 2009-12-03 09:41:25 -06:00
qmp-spec.txt
qmp.py QMP: Introduce qmp-shell 2009-12-03 09:41:25 -06:00
README

                          QEMU Monitor Protocol
                          =====================

Introduction
-------------

The QEMU Monitor Protocol (QMP) is a JSON[1] based protocol for QEMU.

By using it applications can control QEMU in reliable and "parseable" way,
QMP also provides asynchronous events support.

For more information, please, refer to the following files:

o qmp-spec.txt    QEMU Monitor Protocol current draft specification
o qmp-events.txt  List of available asynchronous events

There are also two simple Python scripts available:

o qmp-shell       A shell
o vm-info         Show some informations about the Virtal Machine

[1] http://www.json.org

Usage
-----

To enable QMP, QEMU has to be started in "control mode". This is done
by passing the flag "control" to the "-monitor" command-line option.

For example:

$ qemu [...] -monitor control,tcp:localhost:4444,server

Will start QEMU in control mode, waiting for a client TCP connection
on localhost port 4444.

To manually test it you can connect with telnet and issue commands:

$ telnet localhost 4444
Trying ::1...
Connected to localhost.
Escape character is '^]'.
{"QMP": {"capabilities": []}}
{ "execute": "query-version" }
{"return": "0.11.50"}

Contact
-------

http://www.linux-kvm.org/page/MonitorProtocol
Luiz Fernando N. Capitulino <lcapitulino@redhat.com>