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Re: [Xen-users] lvm over nbd?

To: Tomoki Taniguchi <tomoki.taniguchi@xxxxxxxxx>
Subject: Re: [Xen-users] lvm over nbd?
From: Christian Horn <chorn@xxxxxxxxxxxx>
Date: Wed, 14 Nov 2007 16:46:57 +0100
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On Tue, Nov 13, 2007 at 09:27:59AM +0900, Tomoki Taniguchi wrote:
> I have a system with a large LVM VG partition.
> I was wondering if there is a way i could share the partition
> using nbd and have the nbd-client have access the LVM
> as if it was local.
> SYSTEM A: /dev/sda3 is a LVM partition and is assigned to
> VG volgroup1.  I want to share /dev/sda3 via nbd-server
> SYSTEM B: receives A's /dev/sda3 as /dev/nbd0.  I want to
> access it as VG volgroup1.

For just one client accessing the lvm that should work for plain 
lvm/lvm2, maybe you have to tell lvm it has to search at /dev/nbd0
vor lvm/pv-data.

> I think i read something about CLVM.  Will this allow me to do what
> I want?  how do i go about setting up a clvm?
For accessing the vg with more than one client clvm or evms with
appropriate cluster-aware config is needed.


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