While thin cloning is only supported on OCFS2 file systems and the Oracle VM Manager Web Interface does not provide the option to create a clone storage mapping for a thin clone on an NFS file system, the Oracle VM Manager Command Line Interface does not prevent you from doing this. Therefore, a command similar to the following succeeds:

OVM> create vmclonestorageMapping name=clonestoragemapping
cloneType=THIN_CLONE vmDiskMapping=0004fb0000130000ef5b6a1671333bb3
repository=nfsrepo on vmclonecustomizer name=clonecustomizer1

However, when a clone is created using the clone customizer that this clone storage mapping is attached to, the action fails due to the fact that the clone target does not support the thin clone cloneType:

OVM> clone vm name=vm1.0 destType=vm serverPool=MyServerPool
cloneCustomizer=clonecustomizer1 targetRepository=nfsrepo
Command: clone vm name=vm1.0 destType=vm serverPool=MyServerPool
cloneCustomizer=clonecustomizer1 targetRepository=nfsrepo
Status: Failure
Time: 2014-05-06 22:40:33,755 PDT
JobId: 1399441233570
Error Msg: Job failed on Core: OVMRU_007013E Cannot thin clone: System.img
(2), to: nfsrepo. The clone target does not support thin cloning. [Tue May 06
22:40:33 PDT 2014]

This is expected behavior, but the flexibility offered by the Oracle VM Manager Command Line Interface is inconsistent with the Oracle VM Manager Web Interface and can result in misconfiguration by a user.

Bug 18716652