Re: [Xen-devel] xen 2.0, networking, bridging, and nfsroot

[Brian Wolfe <brianw@xxxxxxxxxxxx>]

Interesting. If you are correct, then this will also break my machines.
8-(  Are you sayign that the old method is no longer there? that only
the domain that grabs the net card will have direct access, the rest
must go through the bridge? Not good.

BTW, I've redone the debian/rules file to build any number of cpu-arch
for 2.4 and 2.6 as well as priv and unpriv modes. I'll toss you the
patch once I have it at least building the .deb packages. Probably
tonight or tomorrow morning. I've also changed up a bunch of
dependancies and added xen-dev as well as the individual XenLinux image
headers, source, and standard debian kernel image/modules/etc files.

As for others pulling my debs (if anyone does), I'll be placing the new
2.0-pre debs at the standard terabox.com/debian location in a couple
days for playing with.

It's getting kinda large during compile to create all of the .deb
packages. :) Adam, also need to chat with you on some solutions to the
modules in debian linux domains....


On Tue, 2004-08-10 at 17:29, Adam Heath wrote:
> Our current setup(based on 1.0 and 1.2) uses completely diskless machines.
> They pxeboot, which then runs grub, which then loads xen.  dom0 and domN all
> do nfsroot, and everything is happy.
> 
> So, along comes 2.0.  It now uses a normal bridge to connect dom0 and domN.
> However, the bridge has a hole, where the network does not exist, while it
> copies the addresses from eth0 to br0, and changes all the routes.
> 
> In nfsroot mode, this fails, as suddenly the network is inaccessible, so
> brctl(and friends) can no longer be found.
> 
> It would be more safe, to not use a bridge to configure access to the other
> domains; this would leave networking running at all times on dom0. Otherwise,
> if the bridge setup code breaks, you would end up with dom0 not accessible
> from the net, even in normal disk-bound situations.
> 
> 
> 
> 
> 
> 
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