Re: Why OVA size increases after encryption?

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On Tue, 10 Mar 2020 at 08:36, Ondrej Kozina <okozina@xxxxxxxxxx> wrote:
>
> On 3/9/20 8:16 PM, Manish Upasani wrote:
> >
> > I am comparing the size of OVF after exporting the VM using OVFtool, or
> > others (doesn't make any difference). When I have no encryption, the VM
> > exports with *2.91G size*.
> >
> > If I try to export the same VM after encrypting the disk using dm-crypt,
> > LUKS its sized at *4.34G*.
>
> IIUC those formats are compressed for faster transfer.

I'm not familiar with the intricacies of the OVF, but the contained
disk images might also be sparse by default (which is very common for
VM images) and when encrypting their whole filesystem as it is done
with dm-crypt they can't remain sparse from an outside point of view.
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