Re: [Qemu-devel] QEMU online guest disk resize wrt host block devices

[Daniel P. Berrange]

On Thu, Sep 01, 2011 at 04:05:26PM +0200, Christoph Hellwig wrote:
> On Thu, Sep 01, 2011 at 02:27:55PM +0100, Daniel P. Berrange wrote:
> > I see two likely approaches:
> > 
> >  1. Add a parameter to the existing 'block_resize' command
> >     'refreshonly=true|false'
> > 
> >  2. Add a separate command  'block_refresh'
> 
> I think all that you need is a to implement a bdrv_truncate method
> for host devices that simply checks if the new size smaller or equal
> to the device size, and return 0 in that case or an error otherwise.

Hmm, yes that is another option. I'll see if I can cook up a patch
for doing that.

Daniel
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