Hi.
Over the last several days I've been reading, asking questions,
searching the Internet to find a viable HA stack for Ubuntu with KVM
virtualization and shared iSCSI storage. And I'm nearly as confused as
when I started.
Basically I'm trying to build a KVM enviroment with an iSCSI SAN and I'm
not quite sure what approach to use for storing the virtual guests.
What I understand to get max speed I should install directly to iSCSI
exported raw devices instead of backing disks.
I'm not sure creating many small LUNs, one for each of the guests is a
good idea.
Would it be better to create just one big LUN and then use LVM to devide
it and assign one "chunk" for each of the guests?
In the same setup I would also like to implement some kind of automatic
failover so if one of the KVM hosts is down I could automatically move
guests over to the other one. Or just perform live migration and move
one of the guest over to a different host with spare capacity.
What would be the best approach to implement a solution like that?
Thanks in advance.
--
Marcin M. Jessa
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