[Users] Live storage migration snapshot removal (fails)

[Dan Kenigsberg]

On Mon, Nov 11, 2013 at 03:11:22PM +0100, Sander Grendelman wrote:
> I can open a bug on this.
> 
> Should I file it for the entire "snapshot removal fails"-problem or
> just this error?

"live storage migration snapshot removal fails due to unexpected
qemu-img output", followed by your analisys below, sounds great to me.

> 
> 
> I've looked at the parsing error and the problem seems to be that the
> qemuImg.check() function expects a qemu-img version that outputs a
> string like: "Image end offset: 262144".
> 
> The only version I could find that does that is the one in the F19 virt-preview
> repository. Stock F19 qemu-img doesn't have this output. Nor do the stock EL6
> or qemu-img-rhev EL6 versions.
> 
> The only function that calls qemuImg.check is blockVolume.shrinkToOptimalSize()
> this function needs (and uses) the parsed offset to shrink the LV containing the
> qcow2 image.