Hi guys
Here's an interesting paper about reliable block storage replication, usable for VMs, if you haven't seen it yet:
http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.178.9190&rep=rep1&type=pdf
The proposed solution supports replication, checksumming, branching, snapshotting and overprovisioning (sparse allocation).
Cheers,
Simon



