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Date:      Sat, 30 Nov 2002 08:39:44 +0000
From:      Adam Laurie <adam@algroup.co.uk>
To:        "Greg 'groggy' Lehey" <grog@FreeBSD.org>
Cc:        questions@FreeBSD.org, Adam Laurie <adam@algroup.co.uk>
Subject:   Re: vinum documentation
Message-ID:  <3DE87950.6000201@algroup.co.uk>
References:  <3DE244ED.8000903@algroup.co.uk> <20021125224557.GJ41068@wantadilla.lemis.com> <3DE353C7.5080704@algroup.co.uk> <20021126232050.GB21404@wantadilla.lemis.com> <3DE5EAA0.4030009@algroup.co.uk> <20021129020137.GC8307@wantadilla.lemis.com> <3DE74326.7080302@algroup.co.uk> <20021130005821.GD17834@wantadilla.lemis.com>

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Greg 'groggy' Lehey wrote:

>>
>>describe the procedure for unplugging the external chassis from
>>machine A, and plugging it into machine B, and bringing up the vinum
>>RAID without re-initialising it (i.e. preserving the data already on
>>it).
> 
> 
> 1.  On machine A, stop Vinum.  Depending on the hardware, you may need
>     to shut down.
> 2.  Remove the chassis from machine A.
> 3.  Connect the chassis to machine B. Depending on the hardware, you
>     may need to shut down.
> 4.  If you haven't rebooted machine B, run camcontrol rescan on the
>     SCSI bus to discover the new disks.
> 5.  Run 'vinum start'.

are you saying that at this point vinum will scan all disk busses and 
decide for itself that the raid exists, and reconstruct /dev/vinum?

i know you've said in a previous post that /dev/vinum "isn't important", 
but since it contains mount points etc, i assume it's reasonably 
vital... anyway, our experience when we complete the steps above was 
that /dev/vinum/raid1 etc. didn't exist, so we couldn't mount the 
volume, which is why we went on to perform the other steps i described.

cheers,
Adam
-- 
Adam Laurie                   Tel: +44 (20) 8742 0755
A.L. Digital Ltd.             Fax: +44 (20) 8742 5995
The Stores                    http://www.thebunker.net
2 Bath Road                   http://www.aldigital.co.uk
London W4 1LT                 mailto:adam@algroup.co.uk
UNITED KINGDOM                PGP key on keyservers


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