[virt-tools-list] sparse files and ls

[Paul Mansfield]

On 14/06/11 13:02, Richard W.M. Jones wrote:
> qcow2 uses a two-level directory.  The second level is not allocated
> until required unless you selected the "preallocation" option when
> creating the disk.  So if you didn't use "-o preallocation" then yes
> this overhead can grow as more disk blocks get allocated.  By the way,
> we found that preallocation is faster.
> 
> Mark wrote extensive documentation on qcow2 here:
> 
> http://people.gnome.org/~markmc/qcow-image-format.html

that's very helpful, thanks

-- 
Paul Mansfield
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