On Wed, Aug 29, 2012 at 8:58 PM, Timothy Coalson <tsc...@mst.edu> wrote:
> As I understand it, the used space of a snapshot does not include anything
> that is in more than one snapshot.

True. It shows the amount that would be freed if you destroyed the
snapshot right away. Data held onto by more than one snapshot cannot
be removed when you destroy just one of them, obviously. The act of
destroying a snapshot will likely change the USED value of the
neighbouring snapshots though.
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