RE: [Xen-users] Xen, Heartbeat2 and live migration

["Petersson, Mats" <Mats.Petersson@xxxxxxx>]

> -----Original Message-----
> From: xen-users-bounces@xxxxxxxxxxxxxxxxxxx 
> [mailto:xen-users-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of 
> Thorolf Godawa
> Sent: 03 July 2007 10:09
> To: xen-users@xxxxxxxxxxxxxxxxxxx
> Subject: Re: [Xen-users] Xen, Heartbeat2 and live migration
> 
> Hi,
> 
>  > it seems that Suse 10 SP1 allows to migrate Xen VMs 
> between Heartbeat
>  > nodes using live migration, where other distros just stop them on a
>  > node and start them on another node.
> I don't see any sense to use live migration to get up and running a 
> system that fails on an other node!
> 
> If heartbeat does not response anymore I assume that either the dom0 
> with all domUs crashed, so a migration of any domU is not possible at 
> all, or the specific domU is dead and you will get a dead domU on the 
> new system after migration too (I don't know if you can 
> migrate a dead 
> system)!
> 
> So if the "source" system does not answer anymore, the only 
> way to get 
> it up and running is to start it again on the same or on a 
> different node.
> 
> Live migration is only good for load balancing and planned 
> maintanance 
> issues, not for high availability!

I completely agree with all the above.

--
Mats
> -- 
> 
> Chau y hasta luego,
> 
> Thorolf
> 
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