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Re: [Qemu-devel] [RFC] QEMU Dbus support - a proposal management API
From: |
Richard W.M. Jones |
Subject: |
Re: [Qemu-devel] [RFC] QEMU Dbus support - a proposal management API |
Date: |
Tue, 11 Dec 2007 15:40:21 +0000 |
User-agent: |
Thunderbird 2.0.0.9 (X11/20071115) |
Anthony Liguori wrote:
Daniel P. Berrange wrote:
Or have 2 monitor interaction modes. One mode uses the command line style
suitable for people / scripting languages. The other umode ses a
binary XDR
protocol for serializing the args & returns values for formal control
APIs to use in a easy manner. It ought to be reasonably
straightforward to
add a binary serialization format for all existing commands
I don't think binary is inherently easier to parse than text provided
that some thought is put into the format of the textual output.
XDR (aka RFC 1014 & RFC 4506) does let you generate complex interfaces
with relative ease. For example, here's the description of the remote
protocol used by libvirt:
http://git.et.redhat.com/?p=libvirt.git;a=blob;f=qemud/remote_protocol.x;h=d409c74387c2642651896136aba9bc1e2b62b621;hb=HEAD
"Parsing" is done for you by stubs that are generated from the above file.
On the downside it turns out that it's not very well supported under
Windows. For libvirt I had to basically port an XDR implementation by
hand to MinGW and add extra functions from glibc to it.
I think we just want to levels of verbosity.
This would work too.
On the point of controlling multiple qemu instances on a machine from a
single place: Easiest way to do this would be to direct all the monitor
sockets into a single known directory. Something along the lines of:
qemu -monitor unix:/var/lib/qemu-monitors/`uuidgen`,nowait
A control process can then just keep an eye on entries under that
directory, and (unlike libvirtd) it's robust against the control process
restarting.
Rich.
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- Re: [Qemu-devel] [RFC] QEMU Dbus support - a proposal management API, (continued)
- Re: [Qemu-devel] [RFC] QEMU Dbus support - a proposal management API, Anthony Liguori, 2007/12/11
- Re: [Qemu-devel] [RFC] QEMU Dbus support - a proposal management API, Daniel P. Berrange, 2007/12/11
- Re: [Qemu-devel] [RFC] QEMU Dbus support - a proposal management API, Yuval Kashtan, 2007/12/11
- Re: [Qemu-devel] [RFC] QEMU Dbus support - a proposal management API, Daniel P. Berrange, 2007/12/11
- Re: [Qemu-devel] [RFC] QEMU Dbus support - a proposal management API, Anthony Liguori, 2007/12/11
- Re: [Qemu-devel] [RFC] QEMU Dbus support - a proposal management API, Avi Kivity, 2007/12/11
- Re: [Qemu-devel] [RFC] QEMU Dbus support - a proposal management API, Paul Brook, 2007/12/11
- Re: [Qemu-devel] [RFC] QEMU Dbus support - a proposal management API, Avi Kivity, 2007/12/11
- Re: [Qemu-devel] [RFC] QEMU Dbus support - a proposal management API, Daniel P. Berrange, 2007/12/11
- Re: [Qemu-devel] [RFC] QEMU Dbus support - a proposal management API, Anthony Liguori, 2007/12/11
- Re: [Qemu-devel] [RFC] QEMU Dbus support - a proposal management API,
Richard W.M. Jones <=
- Re: [Qemu-devel] [RFC] QEMU Dbus support - a proposal management API, Anthony Liguori, 2007/12/11
- Re: [Qemu-devel] [RFC] QEMU Dbus support - a proposal management API, Daniel P. Berrange, 2007/12/11
- Re: [Qemu-devel] [RFC] QEMU Dbus support - a proposal management API, Anthony Liguori, 2007/12/11
- Re: [Qemu-devel] [RFC] QEMU Dbus support - a proposal management API, Daniel P. Berrange, 2007/12/11
- Re: [Qemu-devel] [RFC] QEMU Dbus support - a proposal management API, Dor Laor, 2007/12/11
- Re: [Qemu-devel] [RFC] QEMU Dbus support - a proposal management API, Jean-Christian de Rivaz, 2007/12/11
- Re: [Qemu-devel] [RFC] QEMU Dbus support - a proposal management API, Daniel P. Berrange, 2007/12/11
- Re: [Qemu-devel] [RFC] QEMU Dbus support - a proposal management API, Andreas Färber, 2007/12/11
- Re: [Qemu-devel] [RFC] QEMU Dbus support - a proposal management API, Laurent Vivier, 2007/12/11
- Re: [Qemu-devel] [RFC] QEMU Dbus support - a proposal management API, Andreas Färber, 2007/12/11