Re: GEOM and moving to CURRENT from 7.1

On Jan 14, 2009, at 3:37 AM, Luiz Otavio O Souza wrote:

>>> installed amd64 7.1 from cdrom
>>> partitioned two sata drives to single partitions
>>> labeled and gmirrored
>>>
>>> upgraded to 8-current
>>> ad0 started falling off mirror
>>> ad2 started reporting smart errors
>
>
> Here i cannot boot from my old disk after update my i386 7-STABLE to  
> -current, my ad0s1a slice isn't found.
>
> When the kernel is compiled with GEOM_PART_MBR and GEOM_PART_BSD,  
> the new geom_part stuff is failing to read the slices and bsdlabel  
> together.
>
> If i only load the GEOM_PART_MBR i see the slices detected (ad0s1  
> ad0s2), but when i load the GEOM_PART_BSD together it will show only  
> the bsd labels, as if it is created directly on raw device (ad0a  
> ad0b ad0d ad0e ...).
>
> The only way i've found to boot my system again is to compile a new  
> kernel with GEOM_BSD and GEOM_MBR, instead of GEOM_PART_*.

Wipe out your second sector on the disk. You have a
stale BSD disklabel that prevents the MBR from being
used.

FYI,

-- 
Marcel Moolenaar
xcllnt_at_mac.com