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qemu-img info <filename.ova>
image: <filename.ova>
file format: raw
virtual size: 1.4G (1501966848 bytes)
disk size: 1.4G

#
qemu-img convert -p -f raw -O vmdk -o adapter_type=lsilogic,subformat=streamOptimized,compat6 <filename.ova> <filename.vmdk>
    (100.00/100%)
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vmkfstools -i <filename.vmdk> <newfilename.vmdk> -d thin