You might want to look into qemu img, in using these files, qcows is indeed a sparse file. These can save into a small file, but when expanded fill up your drive with nothing. Qemu-img converts these files I guess. Maybe a qcows user can help.

On Sun, Dec 11, 2022, 11:08 AM ToddAndMargo via users <users@lists.fedoraproject.org> wrote:
> On 12/11/2022 8:22 AM, ToddAndMargo via users wrote:
>> Has dump/restore been superseded with something else?
>>
>> It ain't work right!
>>
>> dump restores a qcows drive as a blank drive
>> https://bugzilla.redhat.com/show_bug.cgi?id=2152393

On 12/11/22 07:58, Bill Cunningham wrote:
 > I love dump/restore. Old fashioned maybe. But you have to use dnf to
 > install dump. Restore should already be there. IDK about its status with
 > fedora.
 >

I got them both.  I have used them for years and adore them.

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