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[Xen-users] Network down when upgrade to xen 4.0.1 on centOS 5.5

To: xen-users@xxxxxxxxxxxxxxxxxxx
Subject: [Xen-users] Network down when upgrade to xen 4.0.1 on centOS 5.5
From: Wenda Ni <wonda.ni@xxxxxxxxx>
Date: Sat, 19 Feb 2011 18:28:13 -0500
Delivery-date: Sat, 19 Feb 2011 15:30:48 -0800
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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 http://wiki.xensource.com/xenwiki/Xen4.0
hg clone -r RELEASE-4.0.1 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?

Wenda Ni, Ph.D.

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