MBR, GPT and their co-existence with other GEOM classes
Lev Serebryakov
lev at FreeBSD.org
Sun Oct 9 07:30:25 UTC 2011
Hello, Perryh.
You wrote 9 октября 2011 г., 18:00:02:
> 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:
(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.
--
// Black Lion AKA Lev Serebryakov <lev at FreeBSD.org>
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