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[Xen-users] (re)load new kernel with rebooting host node?

To: xen-users <xen-users@xxxxxxxxxxxxxxxxxxx>
Subject: [Xen-users] (re)load new kernel with rebooting host node?
From: Rudi Ahlers <Rudi@xxxxxxxxxxx>
Date: Wed, 2 Dec 2009 21:02:30 +0200
Delivery-date: Fri, 04 Dec 2009 08:43:51 -0800
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Hi all,

Is it possible to reload the dom0 / host node's kernel with a newer
one, without rebooting the server? I know kexec can do something like
this for security patches, but I don't know much about kexec, and I
don't want to mess up a production server either. So, has anyone done
something like this before? I need to load a new kernel for one of the
domU's iptables to work, but don't want to reboot the whole server and
cause downtime for the other domU's.

Kind Regards
Rudi Ahlers
CEO, SoftDux Hosting
Web: http://www.SoftDux.com
Office: 087 805 9573
Cell: 082 554 7532

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