Re: Dealing with strange disk devices

[Michael van Elst <mlelstv%serpens.de@localhost>]

On Mon, Oct 28, 2019 at 01:04:13PM -0700, Jason Thorpe wrote:
> 
> > On Oct 28, 2019, at 12:03 PM, Michael van Elst <mlelstv%serpens.de@localhost> wrote:
> > 
> > So anything smaller as DEV_BSIZE will already fail at some other place,
> > validating it in bounds_check_with_label might even be the best place
> > for now, independent on wether it triggers a division by zero. Better
> > places could exist when all drivers would use common code, there are
> > still exceptions. Then you could validate the value once, and not
> > for every disk access.
> 
> Note that some (all?  I forget...) HP-IB CS/80 drives use 256-byte sectors.

Try to build a system with DEV_BSIZE=256 (or 128 if you want to support
old 8" disks).

In theory this will work, but I'd guess that some people nowadays use
DEV_BSIZE when they want to say 512.


Greetings,
-- 
                                Michael van Elst
Internet: mlelstv%serpens.de@localhost
                                "A potential Snark may lurk in every tree."