[libvirt] [RFC] Porting Qemu driver to FreeBSD

Roman Bogorodskiy bogorodskiy at gmail.com
Tue Nov 20 17:07:23 UTC 2012


Recently I have picked up Sean's and Hiren's activities in porting
Qemu driver on FreeBSD.

At this point I have the basics working. Meaning that these things

 - Basic host commands (version, nodeinfo, etc)
 - Can perform basic operations on the VM (start, stop, destroy, etc)
 - Basic bridging (bridge creation/removing, adding/removing interfaces,
   setting addresses etc)

Currently I keep FreeBSD specific info here:


There are a number things to be done:

 - Firewall support. Currently I have just disabled iptables calls
   and add general ipfw NAT rules for all VMs.

   This appears to be the most tough part for me at this point for
   a number of reasons:

    * FreeBSD has two widely used firewall packages: pf and ipfw.
      I'm not sure if they play nice together, e.g. if I choose
      to use ipfw, people that have pf configuration will have
      problems making libvirt work with their existing setup
    * Need to design a general schema for injection of the rules
      so they don't harm existing setup

   ipfw seems to be more appealing for automatic control via
   external applications like libvirt, but I'm still not sure
   how to organise rulesets.

 - Affinity stuff needs to be implemented

 - Code needs a lot of clean-up, needs to be refactored to
   extract common cross-platfrom code, etc

 - NWFilter stuff needs to be implemented (this is sort of a long
   term goal)

The code is available here: https://github.com/novel/fbsd-libvirt/tree/freebsd

Current changes could be observed here:


I would appreciate your thoughts and feedback on that topic.


Roman Bogorodskiy
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