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Date: Wed, 14 Jan 2015 08:24:30 +0100
From: Bram Klein Gunnewiek <bram@shockmedia.nl>
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Subject: [linux-lvm] determining snapshot overhead
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To: linux-lvm@redhat.com

Hello,

I am trying to create snapshots of thick volumes that can't break 
because they overflow (thin volumes are not an option right now). I 
can't find information on how to calculate (in advance) the metadata 
overhead of a snapshot when all blocks in the origin volume are changed 
(e.g. the snapshot is 100% full). Is there a way to do this?

-Bram