[SOLVED] Does dir storage support thin provisioning?

Reading the docs on storage, it says:

"A number of storages, and the Qemu image format qcow2, support thin provisioning. "

It doesn't actually tell you which storages support thin provisioning, but I can I assume that dir storage does not (unless the images stored on it are qcow2)?
 
This is not possible with DIR storage type. You need LVM or CEPH, etc for this ,where the underlayer storage supporting the thin provision itself.
 

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