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xen-users
[SOLVED] Re: [Xen-users] Problem with eth0 with a Debian DomU on Fedora
Hi
OK, for starters I was trying to run sarge with a 2.4.x kernel.. doh!
So I have now set up a etch machine and this works fine :-)
The key things I needed to do was copy over
/lib/modules/2.6.16-1.2096_FC5xenU/ into the DomU machine and then do
this to get the xennet module to load on boot:
echo "alias eth0 xennet" > /etc/modprobe.d/xen
Now to install a 2.6 kernel on sarge...
Chris
On Wed 26-Apr-2006 at 10:46:13AM +0100, Chris Croome wrote:
>
> A lot of people seem to have had problems running DomU's that are not
> FC5 on FC5 Dom0's, the issue being that etho doesn't appear for the DomU
> machine (I have read a lot of list archives this week...) -- I have this
> problem when I boot a debian sarge on FC5 (I have a FC5 DomU working
> without a problem):
>
> Setting up networking...done.
> Setting up IP spoofing protection: rp_filter.
> Configuring network interfaces...SIOCSIFADDR: No such device
> eth0: ERROR while getting interface flags: No such device
> SIOCSIFNETMASK: No such device
> SIOCSIFBRDADDR: No such device
> eth0: ERROR while getting interface flags: No such device
> eth0: ERROR while getting interface flags: No such device
> Failed to bring up eth0.
> done.
>
> And after it's booted there is only the loopback interface:
>
> # ifconfig
> lo Link encap:Local Loopback
> inet addr:127.0.0.1 Mask:255.0.0.0
> UP LOOPBACK RUNNING MTU:16436 Metric:1
> RX packets:0 errors:0 dropped:0 overruns:0 frame:0
> TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
> collisions:0 txqueuelen:0
> RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)
>
> The answer that seems to have worked for FC4 guests on FC5 was in this
> email:
>
> Subject: Re: Device eth0 does not seem to be present
> From: Phil Evans <xenmail@xxxxxxxxxxxx>
> Date: Sun, 23 Apr 2006 04:57:08 +0100
>
> Are you using the stock FC5 Xen kernels? If so, you will need to add the
> following line to the /etc/modprobe.conf files in your domU:
>
> alias eth0 xennet
>
> However I haven't had any luck with this on debian, I tried adding this
> to /etc/modutils/aliases and /etc/modutils/actions and /etc/modules
> since /etc/modprobe.conf is automatically generated on debian, but no
> luck with any of them.
>
> I tried loading the module manually:
>
> # /sbin/modprobe xennet
> modprobe: Can't open dependencies file
> /lib/modules/2.6.16-1.2096_FC5xenU/modules.dep (No such file or directory)
>
> This doesn't work since /lib/modules/ is empty, and I found this in the
> archives:
>
> Subject: Re: eth0 not showing up in guest domains
> From: Jeremy Katz <katzj@xxxxxxxxxx>
> Date: Wed, 22 Feb 2006 00:31:36 -0500
>
> The guest kernel is built with a modular xennet, so you'll need to have
> the modules in the filesystem image as well.
>
> So I tried mounting the disk in Dom0 and copying across the files:
>
> # mount -o loop /usr/local/xen/sarge /media/sarge
> # cp -a /lib/modules/2.6.16-1.2096_FC5xenU/ /media/sarge/lib/modules/
>
> When I then boot the DomU I still get the same errors as above but I get
> a different error when trying to load the xennet module:
>
> # /sbin/modprobe xennet
> Note: /etc/modules.conf is more recent than
> /lib/modules/2.6.16-1.2096_FC5xenU/modules.dep
> modprobe: QM_MODULES: Function not implemented
>
> modprobe: QM_MODULES: Function not implemented
>
> modprobe: Can't locate module xennet
--
Chris Croome <chris@xxxxxxxxxxxxxxxxxxx>
web design http://www.webarchitects.co.uk/
web content management http://mkdoc.com/
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