Name	Description
eagerZeroedThick	*Since*
flat
monolithicFlat
monolithicSparse
seSparse	*Since*
sparse
thick
thin
twoGbMaxExtentFlat
twoGbMaxExtentSparse

         <simpleType xmlns="http://www.w3.org/2001/XMLSchema" xmlns:vsan="urn:vsan" name="OvfCreateImportSpecParamsDiskProvisioningType">
            <restriction base="xsd:string">
               <enumeration value="monolithicSparse"/>
               <enumeration value="monolithicFlat"/>
               <enumeration value="twoGbMaxExtentSparse"/>
               <enumeration value="twoGbMaxExtentFlat"/>
               <enumeration value="thin"/>
               <enumeration value="thick"/>
               <enumeration value="seSparse"/>
               <enumeration value="eagerZeroedThick"/>
               <enumeration value="sparse"/>
               <enumeration value="flat"/>
            </restriction>
         </simpleType>

Enum - OvfCreateImportSpecParamsDiskProvisioningType(vim.OvfManager.CreateImportSpecParams.DiskProvisioningType)

Enum Description