Re: [PATCH] blkif: reconcile protocol specification with in-use implementations

[Paul Durrant <xadimgnik@xxxxxxxxx>]

On 04/09/2024 09:21, Roger Pau Monné wrote:
> > In the absence of that I'm afraid it is a little harder to
> > judge whether the proposal here is the best we can do at this point.
> While I don't mind looking at what we can do to better handle 4K
> sector disks, we need IMO to revert to the specification before
> 67e1c050e36b, as that change switched the hardcoded sector based units
> from 512 to 'sector-size', thus breaking the existing ABI.
But that's the crux of the problem. What *is* is the ABI? We apparently 
don't have one that all OS subscribe to.
From your findings it appears that the only thing that will work 
globally is to define 'sector-size' is strictly 512 and deprecate any 
large sector size support of any kind.
  Paul