From: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Subject: Re: [Xen-devel] Re: [Fedora-xen] 2.6.38-rc dom0 kernel and xen 4.1.0-rc2
To: "Boris Derzhavets" <bderzhavets@yahoo.com>
Cc: "Pasi Kärkkäinen" <pasik@iki.fi>, "xen-devel@lists.xensource.com" <xen-devel@lists.xensource.com>
Date: Thursday, February 3, 2011, 6:41 AM

On Wed, 2 Feb 2011, Boris Derzhavets wrote:
> > Just making sure.. you're running Xen 4.1 ?
> > The userspace qemu blkback implementation is *only* in Xen 4.1 ..
> > And it should get used automatically if dom0 kernel blkback is not available.
>
> Attempt of DomU install env above :-
>
> # xl create -c f14.install
> Parsing config file f14.install
> Daemon running with PID 3411

Are you trying to use 2.6.38 as dom0 or domU?
If this test is a dom0 2.6.38 test then you should know that upstream
2.6.38 doesn't have a network backend yet.
IanC is working on it and he has already sent a some patches to the lkml
a little while ago. If you want to give it a try, checkout Konrad's
devel/next-2.6.38.