Greetings,

Is it possible with oVirt to  import existing VMs where the underlying storage 
is on raw iSCSI luns and to keep them on those luns?

The historical scenario is that we have Virtual farms in multiple sites managed 
by an ancient Orchestration tool that does not support modern OS's as the 
hypervisor.
- In each site, there are clusters of hypervisors/Hosts  that have visibility  
to the same iSCSI luns.
- Each VM has it's own set of iscsi luns that are totally dedicated to that VM
- Each VM is using LVM to manage the disk
- Each Host has LVM filtering configured to NOT manage the VM's iscsi luns 
- The VMs can be live migrated from any Hypervisor within the cluster to any 
other  Hypervisor in that same cluster

We are attempting to bring this existing environment into oVirt without  
replacing the storage model.
Is there any documentation that will serve as a guide for this scenario?

In a lab environment, we have successfully 
- Added 2 hypervisors (hosts) and oVirt can see their  VMs as external-ovtest1 
and external-ovtest2
- Removed the LVM filtering on the hosts
- Created a storage domain that is able to see the iscsi luns, but we have not 
yet  done the 'add' of each lun

Is it possible to import these luns as raw block devices without LVM being 
layered on top of them?
Is it required  to actually import the luns into a storage domain, or can the 
VM's still be imported if all luns are visible on all hosts in the cluster?

In the grand scheme of things, are we trying to do something that is not 
possible with  oVirt?
If it is possible, we would greatly appreciate tips, pointers, links to docs 
etc that will help us migrate this environment to oVirt.

Thanks in Advance
- S
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