[sheepdog] Call to sd_truncate()

[Liu Yuan]

On Thu, Dec 12, 2013 at 11:36:06AM +0100, Hadrien KOHL wrote:
> Hi,
> 
> Thanks, that's interesting. I don't have any component I can think of that
> does this though.
> Could it be possible that the kernel/filesystem of the host is doing it on
> it's own?
> 

IMO only 'qemu-img resize'(probably libvirt has similar function) and
'dog vdi resize' can resize the volume.

But any higher component in QEMU might call .bdrv_truncate() too, which is out
of my cscope. I'd suggest you ask the qemu list that anyone else execept
'qemu-img resize' would call .bdrv_truncate() while VM is running.

Thanks
Yuan