svn commit: r221952 - head/sbin/geom/class/part

Marcel Moolenaar marcel at xcllnt.net
Sun May 15 17:12:29 UTC 2011


On May 15, 2011, at 12:59 PM, Marcel Moolenaar wrote:
> 
> /* ... paging in non-commit details ... */
> 
> The point is that this is what's happening *now*. This is not
> what happened before. With support for logical partitions (i.e.
> the EBR scheme), the total partition bounds and the effective
> usable space are not the same. This is because the partition
> starts with an MBR look-alike. The usable space is therefore
> 1 sector less and start at offset 1 (0-based) from the start
> of the partition.

/* ... compensate for data poisoning while paging in ... */

The usable space starts a *track* from the beginning of the
partition as per standard MBR rules. Not 1 sector in...

-- 
Marcel Moolenaar
marcel at xcllnt.net




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