The CXM drivers enable the management of an OpenNebula cloud based on a cxm cluster.
The cxm cluster is a solution to host virtual machines on a pool of Xen hypervisors connected to a SAN. VM images are stored using LVM and cLVMd.
The use of a cxm cluster allows you to do live-migration, automatic failover and loadbalancing between Xen nodes. These functionalities are handled directly by the cxm daemon, as close as possible from the hypervisors. Live-migration can be managed by the OpenNebula frontend.
The process of installing and configuring of a cxm cluster is described on project's page:
The setup of the cxm drivers in OpenNebula is described on project's page: