On 11/15/2011 12:24 PM, Barak Azulay wrote:
> One of the breakout sessions during the ovirt workshop  was about the
> tools, and focused mainly on the ovirt-guest-agent .
> One of the issues discussed there, was the various existing guest agents out
> there, and the need to converge the efforts to a single agent that will serve
> while 4 agents were mentioned (Matahari, vdagent, qemu-ga &
> during that discussion, we narrowed it down to 2 candidates:
> qemu-ga (aka virt-agent):
> - Qemu specific - it was aimed for specific qemu needs (mainly quiesce guest
> - Communicates directly with qemu (not implemented yet)
> - Supports ?
> - So far linux only
> - written in C
> - Has been around for a long time (~5 years) - considered stable
> - Started as rhevm specific but evolved a lot since then
> - Currently the only fully functional guest agent available for ovirt
> - Written in python
> - Some VDI related sub components are written in C & C++
> - Supports a well defined list of message types / protocol 
> - Supports the folowing guest OSs
> Linux: RHEL5, RHEL6 F15, F16(soon)
> Windows: xp, 2k3 (32/64), w7 (32/64), 2k8 (32/64/R2)
> The need to converge is obvious, and now that ovirt-guest-agent is
> under the ovirt stack, and since it already produces value for enterprise
> installations, and is cross platform, I offer to join hands around ovirt-
> guest-agent and formalize a single code base that will serve us all.
> git @ git://gerrit.ovirt.org/ovirt-guest-agent
> Thoughts ?
The only downside that I concretely heard from folks re:
ovirt-guest-agent was that it is written in Python. Two thoughts there:
1. On Windows it is compiled to an executable, so no separate python
2. ovirt-guest-agent is not very large and does not bring in a lot
(any?) additional python class dependencies above/beyond the core
language and interpreter. Given this, the chances of dealing with
python stack issues are probably minimal and also the overhead of
including _just_ the base python interpreter in a given guest OS is
very lightweight. Core python RPM in F16 is about 80k.
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