From: Michael Vrable <mvrable@cs.ucsd.edu>
Date: Thu, 6 Dec 2007 04:14:08 +0000 (-0800)
Subject: Modifications to the local database: create a summary segments_used table.
X-Git-Url: http://git.vrable.net/?a=commitdiff_plain;h=0347920b621a8feaf16d5f48f33bbe1b238fc896;hp=0347920b621a8feaf16d5f48f33bbe1b238fc896;p=cumulus.git

Modifications to the local database: create a summary segments_used table.

Make the local database more compact by only storing, for each snapshot, a
listing of the segments it uses and the fraction of each which is used,
instead of listing all objects referenced individually.

This commit only adds the new table; it doesn't yet delete the old table
(snapshot_contents).
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