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Date: Fri, 23 Oct 2009 20:15:39 +0100
From: Alasdair G Kergon <agk@redhat.com>
Subject: Re: [linux-lvm] Mirrored LVs
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To: LVM general discussion and development <linux-lvm@redhat.com>

Specify ranges of physical extents at the end of the command line
along with --alloc anywhere to get the layout of your choosing.

e.g. lvcreate ... /dev/sdb:0-2000  /dev/sdc:0-2000  /dev/sdd:0

(Sometimes you need to force a single-extent gap to make it
do what you want, so sdb:0 sdb:2-2000 ...)

Alasdair