Xen users - Feb 2007 - Using PVM with pciback.hide and live-migration

Hello all,

I''m writing a documentation about HA with VMs using Xen hypervisors
and the pciback.hide functionality. I''m imagining a scene with 3
NIC''s. the NIC eth0 is the bridge to LAN. eth1 and eth2 is a load
balance between 2 intenet links. Well, if I will be using the eth1 and
eth2 with the option pciback.hide, I need to live-migration function
the same PCI addressing and the same mac address. It''s correct? Now,
before I continue, is possible use VM live-migration with a NIC via
pciback.hide considering the same PCI address and MAC address in both
servers?


Regards,

-- 
Marco Sinhoreli
http://msinhore.xen-br.org

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> I''m writing a documentation about HA with VMs using Xen
hypervisors
> and the pciback.hide functionality.
Sounds interesting.
> I''m imagining a scene with 3 
> NIC''s. the NIC eth0 is the bridge to LAN. eth1 and eth2 is a load
> balance between 2 intenet links. Well, if I will be using the eth1 and
> eth2 with the option pciback.hide, I need to live-migration function
> the same PCI addressing and the same mac address. It''s correct?
Now,
> before I continue, is possible use VM live-migration with a NIC via
> pciback.hide considering the same PCI address and MAC address in both
> servers?
I''m afraid you can''t migrate a domain that has direct access
to PCI
devices :-(

Do you really need to be able to migrate the domain that''s controlling
the
ethernet cards?  What are you trying to achieve?  How about running a more 
conventional Linux HA setup (e.g. one domain takes over if the other one 
crashes / ceases to respond to heartbeat / something like that)?

Cheers,
Mark


-- 
Dave: Just a question. What use is a unicyle with no seat?  And no pedals!
Mark: To answer a question with a question: What use is a skateboard?
Dave: Skateboards have wheels.
Mark: My wheel has a wheel!

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