[libvirt] Remaining interface state reporting issue - bond options

Daniel P. Berrange berrange at redhat.com
Mon Nov 2 14:12:27 UTC 2009


On Mon, Nov 02, 2009 at 08:44:26AM -0500, Laine Stump wrote:
> With the patches I sent to netcf-devel last night, along with lutter's 
> (or DV's, take your pick ;-) netcf patch to eliminate the segfault, my 
> patches for reporting interface info now pass make check with no errors. 
> I believe lutter will be making a netcf release tomorrow or so, after he 
> gets back on solid ground.
> 
> There is one issue left that I'm unsure what to do about - while the xml 
> returned from netcf for bond interfaces does list all the slave 
> interfaces of the bond and their types (and any required info for that 
> type), the parser for bond info in libvirt requires either an miimon or 
> arpmode node inside the bond, eg:
> 
> <interface type="bond" name="bond0">
> <bond>
> <miimon freq="100" updelay="10" carrier="ioctl"/>
> <interface type="ethernet" name="eth1"/>
> <interface type="ethernet" name="eth0"/>
> </bond>
> </interface>
> 
> I haven't been able to find a source of this information yet and, while 
> it may be useful, I don't see it as necessary. Once again I'm proposing 
> that we make these optional in the XML, such that this would be acceptable:
> 
> <interface type="bond" name="bond0">
> <bond>
> <interface type="ethernet" name="eth1"/>
> <interface type="ethernet" name="eth0"/>
> </bond>
> </interface>
> 
> Once we do that, the netcf-reported state of all 4 supported interface 
> types (ethernet, bridge, vlan, bond) will pass libvirt's parsing test.

That sounds OK to me -  the miimon vs arpmode stuff is not critical. The
interface topology is the only really important thing & you've got that
working now.


Daniel
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