RFC: Project geom-events

[Daniel Kalchev]

On 07.10.11 22:44, Lev Serebryakov wrote:
> Hello, Perryh.
> You wrote 7 октября 2011 г., 18:06:38:
>
>>>    GPT (and MBR) metadata placement is dictated from outside world,
>>> where is no GEOM and geom_label. They INTENDED to be used on DISKS.
>>> BIOSes should be able to find it :)
>> Certainly GPT and MBR must place an instance of the partition table
>> where the BIOS expects it, but there's no immediately obvious reason
>> why they must regard that instance as their GEOM metadata.  GPT puts
>> a second copy in the provider's last block, and AFAICT it could just
>> as well use _that_ instance -- or even a differently-formatted block
>> that included the same data -- as the primary.  MBR could do likewise.
>    I have deja-vu, that I answered this. Please, read standard. GPT
>   _must_ be placed twice -- at first and last sectors (really, more
>   than one sectors). By standard. Secondary copy must be at end of
>   disk. Period.
>

Then, "by standard" GPT cannot coexist with GLABEL. Such setup should be 
disallowed, or at least big nasty message that you have just shoot 
yourself in the leg should be output. (period)

Daniel