-----Original Message----- From: centos-bounces@centos.org [mailto:centos-bounces@centos.org] On Behalf Of Rudi Ahlers Sent: Wednesday, December 02, 2009 2:23 PM To: CentOS mailing list Subject: [CentOS] (re)load new kernel with rebooting host node?
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.
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You're a lot better off go over to the Linux Kernel Devel site. AFIK kexec can only do this on real hardware. I think your better off scheduling downtime for the server. Although kexec does have a site page.
John