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[Xen-users] DomU kernel upgrade tool


please, excuse my poor English

Exist any tool for upgrade kernel automatically in DomU machines?
Because I have the following problem:

After upgrade the kernel package from linux-image-2.6.24-21-xen to
linux-image-2.6.24-22-xen in Dom0 (an Ubuntu Server), I modified the
config files in /etc/xen/domUmachine.cfg for all my VM. Later a
restarted its, but i found the following error

// DomU //

# uname -a
Linux DomUmachine 2.6.24-22-xen #1 SMP Mon Nov 24 21:35:54 UTC 2008
x86_64 GNU/Linux

# ls /lib/modules

# iptables -L
FATAL: Could not load /lib/modules/2.6.24-22-xen/modules.dep: No such
file or directory
iptables v1.3.8: can't initialize iptables table `filter': iptables who?
(do you need to insmod?)
Perhaps iptables or your kernel needs to be upgraded.

// Dom0 //

# uname -a
Linux Dom0machien 2.6.24-22-xen #1 SMP Mon Nov 24 21:35:54 UTC 2008
x86_64 GNU/Linux

I solved this problem copying /lib/modules/2.6.24-22-xen from Dom0 to DomU

// Dom0 //

# xm shutdown DomUmachine

# mount /dev/vg1/DomUmachine-disk /mnt/DomUmachine/

# mkdir /mnt/DomUMahcine/2.6.24-22-xen

# cp -a /lib/modules/2.6.24-22-xen/* /mnt/DomUmachine/2.6.24-22-xen

but it is possible than exist a tool that do this work automatically?
(similar to xen-update-image)


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