On 05/23/2013 03:00 PM, David Vossel wrote:
> Hey,
>
> I've been testing libvirt live migration without shared storage in Fedora 19 
> alpha.  Specifically this feature, 
> https://fedoraproject.org/wiki/Features/Virt_Storage_Migration.  They've done 
> a lot of work to make it a much more solid option than it has been in the 
> past.  I had to work through a few bugs with the guys over there, but it's 
> working great for me now.
>
> So, do we want to use this in HA? It would be trivial to add this to the 
> VirtualDomain resource agent, but does it make sense to do this?  Migration 
> time, depending on network speed and hardware, is much longer than the shared 
> storage option (minutes vs. seconds).   I don't mind adding this support to 
> the agent, but I wanted to get peoples' feedback and make sure this is 
> something we want before making that effort.
>
> -- Vossel

Without shared storage, I personally don't see much of a point. This 
strikes me as a "move" tool, more than a "migrate" tool. It's value is 
certainly very high, and I could see it being an excellent way to move a 
VM from one cluster (and it's shared storage) to another.

That said, without some way to keep the VM in sync, I can see very few 
use cases that would make this useful to HA.

digimer

-- 
Digimer
Papers and Projects: https://alteeve.ca/w/
What if the cure for cancer is trapped in the mind of a person without 
access to education?
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