[linux-lvm] determining snapshot overhead

[Bram Klein Gunnewiek]

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