On Fri, Dec 05, 2014 at 12:07:19PM +0100, Kevin Wolf wrote: > Am 05.12.2014 um 11:26 hat Kevin Wolf geschrieben: > > Like for most other image formats, vhdx images read as all zero in qemu > > after their creation (we're taking advantage from the fact that qemu has > > just created the image, because PAYLOAD_BLOCK_NOT_PRESENT actually means > > undefined rather than zeroed according to the spec). > > Brain fart, self-NACK. > > This obviously means that 'qemu-img convert' still can't leave zeros in > the source file unwritten in the destination, otherwise we're corrupting > data. qemu would still read them correctly, but other implementations > might not. > > We'd have to write the BAT for dynamic images with PAYLOAD_BLOCK_ZERO > for all clusters before we can make this change. > > Jeff, do you want to fix this? >
Yes, I'll go ahead and put together a patch(es) for that.
