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Date: Wed, 16 Jul 2008 08:10:04 -0700
From: malahal@us.ibm.com
Subject: Re: [linux-lvm] Re: Split LV mirror or something
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Stuart D. Gathman [stuart@bmsi.com] wrote:
> On Wed, 16 Jul 2008, Levy Abinajm Melero Sant'Anna wrote:
> 
> > > I have one LV with some critical data, and want to make a safe copy with
> > > less time possible of downtime. Could I make one mirror on a new PV
> > > (lvconvert -m1) and split this copy into a new LV or/and maybe split the VG
> > > into a new VG?
> 
> Why not take a snapshot, and copy that to an LV on new VG ?

More over, this is a better approach than an LVM mirror in your case.