gmirror, gpart and MBR vs GPT in the Handbook
wblock at wonkity.com
Sat Nov 30 21:17:41 UTC 2013
On Sat, 30 Nov 2013, Mike. wrote:
> The Handbook page about creating a gmirror array
> ( http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/geom-mirror.html )
> has the command:
> gpart create -s MBR mirror/gm0
> I've read elsewhere in the handbook that GPT is preferrable to
> the older and less versatile MBR scheme.
Mostly, it is.
> Is there a specific reason why MBR was used in the Handbook
> example for creating a mirror, instead of GPT?
Yes, there was, see the last paragraph of the Metadata Issues
> Or was it just a preference of the person who wrote that Handbook
That was me, and I would much prefer GPT. However, whole-disk gmirror
metadata and the GPT backup table conflict.
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