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Re: Block-level CRC checks

From: "Joshua D(dot) Drake" <jd(at)commandprompt(dot)com>
To: Bruce Momjian <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 17:55:05
Message-ID: 1259690105.26322.25.camel@jd-desktop.unknown.charter.com (view raw or flat)
Thread:
Lists: pgsql-hackers
On Tue, 2009-12-01 at 07:05 -0500, Bruce Momjian wrote:
>  
> > All useful detection mechanisms have non-zero false positives because we
> > would rather sometimes ring the bell for no reason than to let bad
> > things through silently, as we do now.
> 
> OK, but what happens if someone gets the failure report, assumes their
> hardware is faulty and replaces it, and then gets a failure report
> again? 

They are stupid? Nobody just replaces hardware. You test it.

We can't fix stupid.

Joshua D. Drake

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