In an earlier version of Red Hat Enterprise Virtualization, when working with PosixFS (Gluster) and migrating data domains, the reconstruction of the data domains would sometimes fail. Sometimes when reconstruct commands were sent to VDSM, the storage domain acquired an "unknown" status and the status of the data center remained "UP". In this scenario, reconstruct and spmStart both succeeded on VDSM. This was because vdsm was sending "POSIXFS" instead of "SHAREDFS". VDSM has been now updated and storage migration now works as expected.