freebsd stable - Dec 2010 - can't mount root during freebsd-update 7.0 -> 8.1 on amd64

David DEMELIER <demelier.david@gmail.com> wrote:
> Here : http://ivoras.sharanet.org/freebsd/freebsd8.html
>
> GEOM_PART becomes the default slicer
>
> Status: Committed to -CURRENT
> Will appear in 8.0: sure
> Author: Marcel Moolenaar & others
> Web: commit message
>
> GEOM_PART (gpart) is a new GEOM partition class (slicer) and
> utility that rolls up support for many partitioning formats
> (MBR, BSD, GPT etc.) into a single code base.
> ...
> NOTE: Some old utilities like bsdlabel may not work if the kernel
> doesn't include GEOM_BSD and other old slicer classes. In other
> words, bsdlabel et al don't work with GEOM_PART.
Does this mean that, in 8.1-RELEASE, bsdlabel/disklabel will not work
with the GENERIC kernel (which includes GEOM_PART_GPT and GEOM_LABEL,
but no other GEOM_ pieces AFAICT)?

On 06.12.2010 3:11, perryh@pluto.rain.com wrote:
>> GEOM_PART (gpart) is a new GEOM partition class (slicer) and
>> utility that rolls up support for many partitioning formats
>> (MBR, BSD, GPT etc.) into a single code base.
>> ...
>> NOTE: Some old utilities like bsdlabel may not work if the kernel
>> doesn't include GEOM_BSD and other old slicer classes. In other
>> words, bsdlabel et al don't work with GEOM_PART.
> 
> Does this mean that, in 8.1-RELEASE, bsdlabel/disklabel will not work
> with the GENERIC kernel (which includes GEOM_PART_GPT and GEOM_LABEL,
> but no other GEOM_ pieces AFAICT)?
No, It doesn't. You can create partitions with fdisk/bsdlabel.
They do write directly to device and this does initiate tasting.
And GPART detects created partitions.

-- 
WBR, Andrey V. Elsukov