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Date:      Thu, 14 Mar 2002 12:29:12 +1030
From:      Greg Lehey <grog@FreeBSD.org>
To:        Jason Borkowsky <jcborkow@tcpns.com>
Cc:        questions@FreeBSD.org
Subject:   Re: Using VINUM to do RAID-1 disk mirroring
Message-ID:  <20020314122912.E11940@wantadilla.lemis.com>
In-Reply-To: <Pine.BSF.4.44.0203131005150.14508-100000@bemused.tcpns.com>
References:  <20020313101954.D39272@wantadilla.lemis.com> <Pine.BSF.4.44.0203131005150.14508-100000@bemused.tcpns.com>

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On Wednesday, 13 March 2002 at 10:16:00 -0500, Jason Borkowsky wrote:
>
>> No, this is wrong.  You shouldn't have more than one drive per
>> spindle.  You need something like this:
>>
>> /dev/ad0:
>>
>> #        size   offset    fstype   [fsize bsize bps/cpg]
>>   b:  4194304      0      swap                        # (Cyl.  207*- 468*)
>>   c: 80405262        0    unused        0     0         # (Cyl.    0 - 5004*)
>>   e: 76210958   4194304    vinum      2048 16384    90   # (Cyl.   12*- 76*)
>
> OKay, I think I see the source of the error of my ways: I currently have my
> filesystem up and running as a FreeBSD 4.2 filesystem, with 6 partitions,
> and was looking to convert it to a vinum file system. What I would actually
> need to do would be create a new vinum filesystem, and then create all of my
> partitions (or, in this case, sib-partitions) on the vinum partition. Does
> that sound right?

Yes, that's the simple answer.  There's a more complicated one which
will allow you to mirror most existing partitions.  You should find it
in the mail archives, but I don't have time to dig for it right now.

Greg
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