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Date: Wed, 07 Jul 2010 16:21:44 +0200
From: Milan Broz <mbroz@redhat.com>
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Subject: Re: [linux-lvm] Only 4MB of space on a 1GB file mounted in loopback
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To: LVM general discussion and development <linux-lvm@redhat.com>

On 07/07/2010 03:47 PM, Ray Morris wrote:
>    Note that if you are using version 1 of LVM, or using
> version 1 style metadata with LVM2, a 4MB extent size limits
> the size of logical volumes you can create to 255GB (256GB?).

just note - please never use version 1 metadata format for new LVM2 config,
you will avoid problems in future, limits is one of them:-)

The only situation where this is really needed is compatibility
with lvm1 (2.4 kernel - RHEL3 for example).
(and after upgrade you can always use vgconvert to upgrade to LVM2 text
metadata format)

Milan