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Re: [Qemu-devel] [RFC 1/3] qemu-ga: add support for events
From: |
Tomáš Golembiovský |
Subject: |
Re: [Qemu-devel] [RFC 1/3] qemu-ga: add support for events |
Date: |
Thu, 13 Jul 2017 10:56:42 +0200 |
On Fri, 7 Jul 2017 15:53:37 -0500
Eric Blake <address@hidden> wrote:
> On 06/23/2017 08:02 AM, Tomáš Golembiovský wrote:
> > Events can play an integral role when monitoring internal state of the
> > guest OS. This patch adds the core functionality for adding events to
> > QEMU Guest Agent.
>
> Will sending events confuse existing clients that aren't expecting them?
> Do we need to add some sort of protocol handshake when the client first
> connects so that we know whether the client is able to parse events
> (including ignoring unknown events)? (It's a shame that events were
> built into QMP from the beginning, so we've never had to figure out how
> to portably hand-shake a client/server negotiation on additional
> features to be used across the wire)
You're probably right. Something like this will be necessary.
>
> --
> Eric Blake, Principal Software Engineer
> Red Hat, Inc. +1-919-301-3266
> Virtualization: qemu.org | libvirt.org
>
--
Tomáš Golembiovský <address@hidden>