Re: xbd and large sectors

[Manuel Bouyer <bouyer%antioche.eu.org@localhost>]

On Fri, Jul 21, 2023 at 11:48:56AM +0200, Manuel Bouyer wrote:
> [...]
> 
> Reading the linux sources, the xbd driver pass "sectors" directly to
> set_capacity(), which expects the disk size in 512-byte sectors, so
> the backend is doing what linux expects, and NetBSD is miscomputing
> the disk size when doing sectors * sector-size.
> 
> A NetBSD dom0 will never report 4k sectors to the guest so we can just fix
> the frontend, and there's no backward compat issue.
> 
> I will commit a fix to HEAD later today.

Done in xbd_xenbus.c 1.132
Christian can you please test and report if it properly fixes the issue ?
When I get confirmation that the problem is fixed I'll request a pullup to
all stable branches

-- 
Manuel Bouyer <bouyer%antioche.eu.org@localhost>
     NetBSD: 26 ans d'experience feront toujours la difference
--