*** pgsql/doc/src/sgml/wal.sgml	2009/04/09 16:20:50	1.59
--- pgsql/doc/src/sgml/wal.sgml	2009/11/28 16:21:31	1.60
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*** 1,4 ****
! <!-- $PostgreSQL: pgsql/doc/src/sgml/wal.sgml,v 1.58 2009/01/15 00:34:25 momjian Exp $ -->
  
  <chapter id="wal">
   <title>Reliability and the Write-Ahead Log</title>
--- 1,4 ----
! <!-- $PostgreSQL: pgsql/doc/src/sgml/wal.sgml,v 1.59 2009/04/09 16:20:50 momjian Exp $ -->
  
  <chapter id="wal">
   <title>Reliability and the Write-Ahead Log</title>
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*** 86,91 ****
--- 86,93 ----
     ensure data integrity.  Avoid disk controllers that have non-battery-backed
     write caches.  At the drive level, disable write-back caching if the
     drive cannot guarantee the data will be written before shutdown.
+    You can test for reliable I/O subsystem behavior using <ulink
+    url="http://brad.livejournal.com/2116715.html">diskchecker.pl</ulink>.
    </para>
  
    <para>