On 24/06/2016 05:58, Eric Blake wrote: > Since the raw format driver is just passing things through, we can > do byte-based read and write if the underlying protocol does > likewise. > > There's one tricky part - if we probed the image format, we document > that we restrict operations on the initial sector. Rather than > trying to handle a read-modify-write on the first sector, it's > easiest to just include in our restrictions that partial writes to > the first sector are not permitted.
Can we just set the alignment to at least 512 if probed? It's the practical guest alignment anyway. Paolo