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Re: [libvirt] [PATCH libvirt 2/2] storage: learn to create qcow2 with preallocation



On Wed, May 09, 2012 at 01:25:20PM +0200, Marc-André Lureau wrote:
> On Wed, May 9, 2012 at 12:55 PM, Christophe Fergeau <cfergeau redhat com> wrote:
> > ). I think it would be nicer to be consistent
> > with that for preallocation and not return an error either in this case.
> 
> I am not convinced this is the right thing to do. Perhaps sparse
> allocation, or not, does not make a big difference, but prealloc does.

Big speed difference during win7 installations? or are you thinking of
another big difference? sparse/non-sparse allocation can make a big
difference on disk usage, which is a big diference as well imo.
I agree with you that erroring out is better, but I tend to prefer
consistency in cases like this.

Christophe

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