[RFC] Remove requirement of alignment to track from MBR scheme

[Andrey V. Elsukov]

On 23.05.2011 21:38, Warner Losh wrote:
> I'm all for carefully moving forward.  There were parts of the patch
> that seemed to be over-reaching.
> 
> Personally, I'd just do something like the following since it
> reflects what others do and implements the de-facto meaning of the
> MBR:
> 
> Index: sys/geom/part/g_part_mbr.c 
> =================================================================== 
> --- sys/geom/part/g_part_mbr.c	(revision 222183) +++
> sys/geom/part/g_part_mbr.c	(working copy) @@ -473,7 +473,7 @@
> 
> basetable->gpt_entries = NDOSPART; basetable->gpt_first =
> basetable->gpt_sectors; -	basetable->gpt_last = msize - (msize %
> basetable->gpt_sectors) - 1; +	basetable->gpt_last = msize - 1;

There was report with different problem, the user created a partition
that is aligned to 4KB sector size and it starts from the inside of
first track, i.e. start offset < 63.
And as he said, he did use sysinstall(8) for partitioning.

-- 
WBR, Andrey V. Elsukov

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