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Re: Block-level CRC checks

From: Bruce Momjian <bruce(at)momjian(dot)us>
To: bruce(at)momjian(dot)us
Cc: Simon Riggs <simon(at)2ndQuadrant(dot)com>, Heikki Linnakangas <heikki(dot)linnakangas(at)enterprisedb(dot)com>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Aidan Van Dyk <aidan(at)highrise(dot)ca>, Alvaro Herrera <alvherre(at)commandprompt(dot)com>, Pg Hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: Block-level CRC checks
Date: 2009-12-01 12:58:08
Message-ID: 200912011258.nB1Cw8F02488@momjian.us (view raw or flat)
Thread:
Lists: pgsql-hackers
bruce wrote:
> What might be interesting is to report CRC mismatches if the database
> was shut down cleanly previously;  I think in those cases we shouldn't
> have torn pages.

Sorry, stupid idea on my part.  We don't WAL log hit bit changes so
there is no guarantee the page is in WAL on recovery.

-- 
  Bruce Momjian  <bruce(at)momjian(dot)us>        http://momjian.us
  EnterpriseDB                             http://enterprisedb.com

  + If your life is a hard drive, Christ can be your backup. +

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Subject: Re: Block-level CRC checks
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