Re: New warning, what does it mean?

From: Marcel Moolenaar <xcllnt_at_mac.com>
Date: Sat, 03 Jan 2009 09:43:36 -0800
On Jan 3, 2009, at 2:20 AM, David O'Brien wrote:

> On Fri, Jan 02, 2009 at 11:54:26AM -0700, M. Warner Losh wrote:
>> I'm getting the following from my main disk on boot now:
>> GEOM: ad0s2: geometry does not match label (255h,63s != 16h,63s).
> ..
>> Why are they complaining?  What is the corrective action to be taken
>> here?  Why does it matter with modern disks and BIOSes anyway?
>
> All very good questions.  See my recent "Shooting sysinstall/SADE
> geometry warning in the head" thread.  Seems maybe GEOM_PART_BSD
> took a page from that book and should be smacked also.

Leave it for now. We've been very lacks in checking the
disk label as witnessed by the fact that sysinstall
creates faulty labels and we didn't even know. The
message can go away (or put under boot verbose) when
the dust settles.

> I don't see why FreeBSD is making such a mess of geometries with
> modern SATA/IDE disks.  We seem to be the standout here. :-(

We've never treated it seriously. We keep saying "it doesn't
matter with modern disks" and things like that and as such
side-step the issue that file systems or disk labels still
record them, use them or need them. We created the problem
ourselves by creating inconsistency at various levels. With
geom_part I made it more visible so that we can actually
make it better.

-- 
Marcel Moolenaar
xcllnt_at_mac.com
Received on Sat Jan 03 2009 - 16:43:38 UTC

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