On 10/30/11 21:18, Trey Dockendorf wrote:
I do need live migration but not as a failover. So the migration will
be manual and not automatic. In that case I would at some point have to
run in primary/primary. Is the cluster fs only for shared storage
configurations? Also what ensures that the VMs disk is only being
accesses by one hypervisor node at a time? Would libvirt or drbd
controll/ensurs that or is it up to me? Thats my main concern once I
know this is feasible and the best route.
Thanks
- Trey
OK, I see now. Regardless, you need prim/prim then. The shared storage
IS the DRBD resource. You need it to be the same on both nodes to be
able to live migrate or even fail over. You could however also use DRBD
to serve as shared storage for the config files. It makes sense to have
this information the same on both nodes.
Ensuring unique access is established by, as mentioned, cluster
software. The KVM resource (in case of Pacemaker) will have to be
configured to be able to run uniquely on ONE node.
b.
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