[PVE-User] Info on qcow2 clone

Paul Gray gray at cs.uni.edu
Wed Oct 22 18:45:57 CEST 2014

On 10/22/2014 11:42 AM, Alessandro Briosi wrote:
> As stated it's already a sparse file.
> file size is 32GB but on the filesystem it uses only 5GB

Your definition of "sparse" and my definition of "cruft" are colliding here.

"Sparse" == hardly used filesystem.
"cruft" == non-zeroed, *unused* sectors on the disk

Your sparse filesystem likely has a lot of cruft.  The two facets aren't 
mutually exclusive.


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