MBR, GPT and their co-existence with other GEOM classes

[Lev Serebryakov]

Hello, Lev.
You wrote 9 октября 2011 г., 11:30:10:
>> To install FreeBSD on a gmirrored disk, use MBR (or "dangerously
>> dedicated" BSD label) instead of GPT.  (This is one reason why
>> BSD label and MBR should not be considered obsolete.)
>   MBR doesn't check size of provider on taste. It should be fixed too.

>   So, I see three changes which should be done in geom_gpart land:
  Four, to be precise.

>    (1) GPT sub-moudle gpart should check rank of provider and issue big
>    warning if rank isn't 1 (it is not low-level disk) on creation.

>    (2) Documentation should be changed to explain (1) in more details.

>    (3) MBR sub-module of gpart should check size of provider and
>    refuse to "see" MBR if provider is several sectors larger, than
>    recorded in MBR. It will prevent it to pickup failed component of
>    gmirror directly.

     (4) The same check as described in (3) should be done by BSD
     sub-module of gpart.




-- 
// Black Lion AKA Lev Serebryakov <lev at FreeBSD.org>