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[Xen-users] Several XEN questions

  • To: xen-users@xxxxxxxxxxxxxxxxxxx
  • From: Fabiano Sidler <fabianosidler@xxxxxxxxx>
  • Date: Thu, 9 Mar 2006 00:10:11 +0100
  • Delivery-date: Wed, 08 Mar 2006 23:11:58 +0000
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  • List-id: Xen user discussion <xen-users.lists.xensource.com>

I planned to play around a bit with XEN on my P3 machine. Before I go on,
I still have several questions that involve the planning phasis.

-What about module loading in domU kernels?
I know that it won't success with hardware related drivers, but is it
possible to load "pure software drivers" like iptables?

Reboot the dom0 system while running domU systems?
I'm not sure how equal the dom0 system is to the domU ones, but as long as
the hypervisor isn't stopped, can dom0 be rebooted without interrupt of
the domU systems? Would it be possible on hardware-supported virtualisation
versions of the hypervisor, as with Vanderpool of Pacifica?

How many virtual eths per one physical one do you recommend? If have a
100mbps card PCI built in my box. This should suffice for about 4-5
systems, shouldn't it? Furthermore, how is routing approached by default?
I've read some docs about it, but didn't really understand it in it's
entirety. Is there already some L2-routing so I wouldn't need to connect
a cable into the physical device or are all packets sent to a router,
hence L3?

Is there a way booting a domU (or more likely an installer for a future
domU) from CD? If not, it would be necessary to first set all systems up
"xenlessly" and then adapt all them to run on XEN.

In hope of not to have asked some silly questions,
F. Sidler

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