Recently I was trying to do P2V of a Windows 2003 STD Server to ESX platform. P2V was failed with error “Failed to clone Volume” and log files had the below message. Block level cloning of the disk was failing.

ERROR — Convert: converter.fault.CloneFault (converter.fault.CloneFault) { dynamicType = <unset>, faultCause = (vmodl.MethodFault) null, description = “BlockLevelVolumeCloneMgr::CloneVolume: [...]