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From: Richard Huxton <dev@archonet.com>
To: pgsql-docs-owner@postgresql.org
Subject: Proposed doc-patch: Identifying the Current WAL file
Date: Wed, 12 Apr 2006 10:02:49 +0100
Message-ID: <443CC239.7010303@archonet.com> (raw)

Reading Tom's posting here:
http://archives.postgresql.org/pgsql-general/2006-04/msg00499.php

I just realised we don't seem to mention this in the docs anywhere. I 
propose adding a short paragraph to 23.3.1
http://www.postgresql.org/docs/8.1/static/backup-online.html#BACKUP-ONLINE-CAVEATS

After "Except in the case of retrying a failure, it will be called only 
once for any given file name."

To identify the current, partially-filled WAL segment, sort first by 
mtime and second by file name. That is, take the latest mtime among the
properly-named files, breaking ties by taking the higher filename.

-- 
   Richard Huxton
   Archonet Ltd



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