Re: How do you unsparsify a qcows2 file?

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On Mon, Dec 12, 2022 at 9:44 AM Tom Horsley <horsley1953@xxxxxxxxx> wrote:
>
> On Mon, 12 Dec 2022 06:33:15 -0800
> ToddAndMargo via users wrote:
>
> > This it?
> >
> > dd if=/dev/zero of=/sometempfile
>
> Seems like that would work. Might need to do it as root in case the
> kernel doesn't allow an ordinary user to use up all the free space on
> a disk. And don't forget "rm /sometempfile" once the dd finishes
> with out of space errors.
>
> Of course you could take a completely different tack and use
> qemu-img convert to change the qcow2 format file to a raw
> disk image and modify the virtual machine to use that new file.
>
      I use logical volumes for the virtual machines I care about
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