On Sat, Feb 19, 2011 at 06:28:13PM -0500, Wenda Ni wrote:
> Hello,
>
> We have default xen 3.1.2 on centOS 5.5. We now want to upgrade xen 3.1.2
> to xen 4.0.1 while using the existing dom0 kernel (2.6.18). I followed the
> instructions on [1]http://wiki.xensource.com/xenwiki/Xen4.0 
>
> hg clone -r RELEASE-4.0.1 [2]http://xenbits.xen.org/xen-4.0-testing.hg 
> cd xen-4.0-testing.hg
> make xen
> make tools
> make stubdom
>
> make install-xen
> make install-tools
> make install-stubdom
>
> And at last, we update the grub.conf/menu.lst to use the newly installed
> Xen 4.0 hypervisor. The menu.lst is attached as follows:
>
> title CentOS (2.6.18-194.32.1.el5xen)
> root (hd0,0)
> #kernel /xen.gz-2.6.18-194.32.1.el5
> kernel /xen-4.0.1.gz
> module /vmlinuz-2.6.18-194.32.1.el5xen ro
> root=/dev/VolGroup00/LogVol00 rhgb quiet
> module /initrd-2.6.18-194.32.1.el5xen.img
>
> Due to some policy, we use static ip address. The network setup is exactly
> the same before and after the change from " /xen.gz-2.6.18-194.32.1.el5"
> to "/xen-4.0.1.gz ". But it seems that the network is down after reboot.
> Could anyone know my mistake or problem?
>
Try disabling (comment out) network-script in "/etc/xen/xend-config.sxp"
and reboot.
Then set up the required bridges using the centos network scripts instead,
ie. /etc/sysconfig/network-scripts/ifcfg*.
-- Pasi
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