Hi,
Please help me understand why you are doing it this way? I'm using Xen with integrated storage, but I've been considering separating my storage from my virtual hosts. Conceptually, we can ignore the Xen/KVM difference for this discussion. I would imagine using LVM on the storage server then setting the LVs up as iSCSI targets. On the virtual host, I imagine I would just configure the new device and hand it to my VM.
I am open to any suggestion. I am not really an expert of iscsi, so I don't know what is the best way to implement a solution where a small group of hv support live migration with a shared storage. This way looked rather straightforward and for some level, documented on official redhat manuals. The problem is that there is no mention about this LVM problem :( Initially I tried configuring the raw iscsi device ad storage pool but virt-manager reported it was 100% occupied even if that was not true (indeed 0% was occupied).
Andrea