[ovirt-users] strange issue: vm lost info on disk

Hi! , Im strugled about an ongoing problem: after migrating a vm's disk from an iscsi domain to a nfs and ovirt reporting the migration was successful, I see there's no data 'inside' the vm's disk. we never had this issues with ovirt so Im stranged about the root cause and if theres a chance of recovering the information. can you please help me out troubleshooting this one? I would really appreciate it =) running ovirt 4.2.1 here! thanks in advance, JP