Xen devel - Jan 2005 - Rebooting domain0 independent of other domains

Hi,

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?

-- 
Thanks,
Matt



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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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> 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?
This is potentially possible, but the control tools aren''t currently up
to it.
Maybe later in the year...

Ian


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On Fri, 2005-01-21 at 00:58 +0000, Mark Williamson
wrote:
> > 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.
That''s what I was thinking... upgrade dom0 without affecting the other
running domains.  Good point on losing disk and network services
though... that makes it a bit trickier.  

It''s nothing major right now, just an idea I had thought of.




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