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Re: [Xen-devel] Rebooting domain0 independent of other domains

To: xen-devel@xxxxxxxxxxxxxxxxxxxxx
Subject: Re: [Xen-devel] Rebooting domain0 independent of other domains
From: Mark Williamson <Mark.Williamson@xxxxxxxxxxxx>
Date: Fri, 21 Jan 2005 00:58:24 +0000
Cc: Matt Ayres <matta@xxxxxxxxxxxx>
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> Are there any plans to be able to reboot domain0 without affecting other
> running domains or is this not possible due to how Xen was
> architectured?

Something like this should be possible after some coding - it won't work 
currently.  Of course, the other domains would lose network and disk services 
unless they were being provided by driver domains other than dom0.

It would be kinda neat if you could do kernel upgrades, etc. in dom0 without 
necessarily having to reboot the rest of the machine.

Another thing that has been mentioned is building a "failover domain" that 
takes if dom0 goes down.  They'd synchronise state regarding other domains 
somehow whilst dom0 was up and the failover could just take over if dom0 
crashed / was rebooted / whatever.

Cheers,
Mark


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