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.
