Re: [Qemu-devel] Re: [PATCH 0/3]: BLOCK_WATERMARK QMP event

[Luiz Capitulino]

On Wed, 10 Mar 2010 10:28:43 +0100
Christoph Hellwig <address@hidden> wrote:

> On Wed, Mar 10, 2010 at 09:33:31AM +0100, Kevin Wolf wrote:
> > When should a low watermark trigger? Images only ever grow, so testing
> > if the highest allocated block goes below some watermark would never
> > work (except for some unlikely special cases like deleting a snapshot
> > after which no new clusters have been allocated).
> 
> Wither proper guest support images can shrink.  I'm about to land
> support for that in qemu, although for now just for every limited
> setups.

 It were this kind of future functionality I was concerned about.