On Wed, Mar 14, 2012 at 01:14:18PM +0100, Paolo Bonzini wrote: > > Note that the discard granularity is only a hint, so it's really more a > maximum suggested value than a granularity. Outside of a cluster > boundary the format would still have to write zeros manually. > > Also, Linux for example will only round the number of sectors down to > the granularity, not the start sector.
Which really is more of a bug than a feature. The current discard implementation in Linux is still very poor.
