GPT + gmirror

Darren Baginski kickbsd at
Tue May 1 14:42:00 UTC 2012

There is a way.
Here are the results (in Russian) will provide meaningful translation to French/German/English or use your favorite translation service.

25.04.2012, 17:01, "Julien Cigar" <jcigar at>:
> Hello,
> I wondered if there is a way to gmirroring the whole disk (not slices
> separately) when using GPT?
> GPT puts its metadata at the end of the disk, and when I start to use
> gmirror it overwrites the GPT metadata (... as gmirror puts also its
> metadata at the end of the disk ...).
> I noticed a new option in the newfs manpage:
> -r reserved
> The size, in sectors, of reserved space at the end of the parti‐
> tion specified in special. This space will not be occupied by
> the file system; it can be used by other consumers such as
> geom(4). Defaults to 0.
> I wondered if it could help .. ? Why does it default to 0?
> Thanks,
> Julien
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