[libvirt] testing volDownload and volUpload different md5 on source and dest for qcow2

[Michal Privoznik]

On 03/29/2017 06:42 PM, Vasiliy Tolstov wrote:
> Hi. I'm fix libvirt php binding to properly recv from stream and after
> that test volume download and volume upload functions. And see, that
> in case of raw image md5sum on src and on dst is equal.
> But in case of qcow - phisical size of image is different and md5sum
> does not equal.
> Why this can happening?
>

This is really weird. Do you perhaps have a reproducer that I can try? 
Does this reproduce when using bare virsh? We need to identify whether 
the bug lies in libvirt or in the bindings.
I've tried to reproduce locally but wasn't successful. I mean, in my 
testing all the md5 checksums matched.

Michal