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Date:      Thu, 9 Jul 2009 23:52:46 +0100
From:      Anton Shterenlikht <>
To:        Tom Munro Glass <>
Subject:   Re: How to add a slice and partition to a mirror
Message-ID:  <>
In-Reply-To: <>
References:  <>

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On Fri, Jul 10, 2009 at 10:12:56AM +1200, Tom Munro Glass wrote:
> I have a FreeBSD 7.2 system that had two 37GB mirrored SCSI drives. These 
> contained a single slice filling the disk with separate partitions for swap, 
> /, /var, /usr and /home.
> Yesterday one of the drives had a catastrophic failure - no problem, the 
> system still worked on one drive as it is supposed to. I have purchased two 
> new 74GB drives because I need more space.
> With just the working 37GB drive connected, I ran:
> # gmirror forget gm0
> Then I connected one of the new 74GB drives and ran:
> # gmirror insert gm0 /dev/da1
> and the mirror rebuilt itself correctly, but of course only half of the new 
> drive is being used.
> I've now removed the 37GB drive and run "gmirror forget gm0" again and the 
> system is running on the new half used 74GB drive.
> How do I define a new slice and partition to fill the second half of this 
> drive?

what is the output of "gpart gm0" ?

Anton Shterenlikht
Room 2.6, Queen's Building
Mech Eng Dept
Bristol University
University Walk, Bristol BS8 1TR, UK
Tel: +44 (0)117 928 8233 
Fax: +44 (0)117 929 4423

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