Chris Croome
2006-Apr-26 09:46 UTC
[Xen-users] Problem with eth0 with a Debian DomU on Fedora Core 5
Hi
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 etch 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@probonic.com>
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@redhat.com>
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
Does anyone have any suggestions?
Thanks
Chris
--
Chris Croome <chris@webarchitects.co.uk>
web design http://www.webarchitects.co.uk/
web content management http://mkdoc.com/
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Chris Croome
2006-Apr-26 14:11 UTC
[SOLVED] Re: [Xen-users] Problem with eth0 with a Debian DomU on Fedora Core 5
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@probonic.com> > 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@redhat.com> > 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@webarchitects.co.uk> web design http://www.webarchitects.co.uk/ web content management http://mkdoc.com/ _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users