From mboxrd@z Thu Jan  1 00:00:00 1970
Date: Tue, 31 Jan 2012 13:23:18 +0000
From: Alasdair G Kergon <agk@redhat.com>
Message-ID: <20120131132318.GH16447@agk-dp.fab.redhat.com>
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	<1eaeb3d5.c6e.135332dea21.Coremail.chaimvy@163.com>
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Subject: Re: [linux-lvm] New LVM2 release 2.02.89:
	Thinly-provisioned	logical volumes
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To: LVM general discussion and development <linux-lvm@redhat.com>
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On Tue, Jan 31, 2012 at 05:52:21PM +0800, Busby.Cheung wrote:
>        I tryed to use this LVM2 to create thin pool and thin lv, but it said PE was required. The VG I used is free, can anyone help me? Should any more args be needed? Is there any more detailed HowTo file than man file?
  

For now, you need either 2 PVs in the VG, or use --alloc anywhere with 1 PV, or
split the allocation manually like:

> [root@host2 ~]# lvcreate  -L100M -T vg_pool/pool -V 1T --name thin_lv /dev/sdl:0 /dev/sdl:1-

I have a patch that fixes this problem, but I'm still testing it.

Alasdair