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Date: Sun, 5 Aug 2001 23:47:39 +0200
From: =?iso-8859-1?Q?Ragnar_Kj=F8rstad?= <lvm@ragnark.vestdata.no>
Subject: Re: [linux-lvm] LVM with multi-path disks?
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In-Reply-To: <20010805110607.A29329@caldera.de>; from Christoph Hellwig on Sun, Aug 05, 2001 at 11:06:07AM +0200
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To: Christoph Hellwig <hch@caldera.de>, linux-lvm@sistina.com

On Sun, Aug 05, 2001 at 11:06:07AM +0200, Christoph Hellwig wrote:
> On Sun, Aug 05, 2001 at 02:28:01AM +0200, Ragnar Kj=EF=BF=BDrstad wrote:
> > E.g. you have a md0 device consisting of sda and sdb - would not lvm
> > find three different paths to the same data (sda, sdb, md0) when
> > scanning for physical volumes? Will that not cause problems?
>=20
> vgscan skips devices that are identified as md devices, so you will
> not see sda and sdb but just md0.  Multipath is not different from
> 'normal' RAID in this respect.

Hmm, I didn't think md devices needed superblocks thus could not be
identified?


--=20
Ragnar Kjorstad
Big Storage