From owner-freebsd-geom@FreeBSD.ORG  Tue Apr  5 02:21:33 2005
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Date: Mon, 04 Apr 2005 22:21:37 -0400
From: Christian Caron <christian.caron@videotron.ca>
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To: Tomas Zvala <tomas@zvala.cz>, freebsd-geom@freebsd.org
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Subject: Re: mirroring two data disks (no system files on them)
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Tomas Zvala a écrit :
> did /dev/ad3s1 contain filesystem already? did you do newfs 
> /dev/mirror/gm0s1 ? what does it mean "dies"? what does it say?

Ok... man newfs shed some light on how to prepare a new disk...

newfs -U /dev/mirror/gm0s1
mkdir /mirror
mount /dev/mirror/gm0s1 /mirror

did the trick. It boots ok and it seems to work (gmirror list does 
return something, although it says "DIRTY" which doesn't sound 
excellent...).

I'll read the manual.

Thanks!

Christian