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Date: Sat, 10 Jul 2010 16:50:32 +0100
From: Alasdair G Kergon <agk@redhat.com>
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Subject: Re: [linux-lvm] efficiently copying snapshot data.
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To: LVM general discussion and development <linux-lvm@redhat.com>

On Fri, Jul 09, 2010 at 09:01:02PM -0400, Stuart D. Gathman wrote:
> Copy to a regular LV on the target system, and then do some dmsetup 
> and metadata magic to turn the LV (which is a copy of a COW table) into a
> snapshot of the master LV with the COW already populated.

> I don't think such a utility exists.

lvconvert -s  does this, regardless of what the man page might lead you
to believe!

Alasdair