RE: [Xen-devel] Live Migration and Bridge Settings

["Ian Pratt" <m+Ian.Pratt@xxxxxxxxxxxx>]

> For this setup I have both Xen hosts NFS mount a directory containing 
> the image.  I start a ping process on one of the Xen hosts to monitor 
> network connectivity.  I then live migrate the VM from one to host to 
> the other.  The ping process will usually fail for 
> approximatley 15-20 
> seconds (sometimes upto ~50 seconds), and then eventually 
> restart.  The 
> VM migrates properly.

How are your various machines interconnected? Are they all on the same
subnet (via an Ethernet switch), or are they routed?

> I started to suspect that something is wrong with my bridge setup.  I 
> started out using the default Xen vif-bridge scripts, but I 
> found that 
> the VM only had connectivity to dom0.  The VM wasn't able to 
> ping other 
> hosts on the subnet.  From my googling, I discovered that people had 
> similar problems, and based on their success I changed my 
> init scripts. 
>   Instead of Xen creating the bridge, I create my own, and label it 
> eth0.  I do this before the init scripts configure eth0.

Calling it eth0 seems a very odd thing to do, but I guess it would work.

Ian


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