Re: mirroring


Subject: Re: mirroring
From: Anthony Valentine (amv@akvalentine.com)
Date: Sun Jan 19 2003 - 22:01:46 AKST


I don't know the answer to your question, however I recently ran across
a new O'Reilly book that may help you out.

http://www.oreilly.com/catalog/mraidlinux/?CMP=EM13457

Anthony

On Fri, 2003-01-17 at 22:02, lee@afabco.com wrote:
> I have a single drive that has been in production a while, has production
> type stuff on it, and now I want to add a second (identical) drive and
> mirror it. I thought I could do this by setting up /etc/raidtab and
> /etc/fstab, then doing a raidhotadd.
>
> so if the existing drive is /dev/hde1, the new drive is /dev/hdg1, I could
>
> raidhotadd /dev/hdg1 /dev/md0
>
> Unfortunately, it then tells me it can't find the superblock, and can't
> proceed.
>
> Which of course in retrospect makes sens, since it was not set up as a
> mirror in the first place.
>
> My question is how can I create a mirrored raid from a non-raid without
> having to cpio the whole 150G off somewhere, create the mirror (destroying
> everything) and then cpio'ing the 150G back?
>
> tia,
>
> Lee
>
>
>
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-- 
Anthony Valentine <amv@akvalentine.com>

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