Re: Detecting corrupted pages earlier

From: Kevin Brown <kevin(at)sysexperts(dot)com>
To: pgsql-hackers(at)postgresql(dot)org
Subject: Re: Detecting corrupted pages earlier
Date: 2003-03-29 11:55:20
Message-ID: 20030329115520.GH1833@filer
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Tom Lane wrote:
> Kris Jurka <books(at)ejurka(dot)com> writes:
> > Is zeroing the pages the only / best option?
>
> It's the only way to avoid a core dump when the system tries to process
> the page. And no, I don't want to propagate the notion that "this page
> is broken" beyond the buffer manager, so testing elsewhere isn't an
> acceptable answer.
>
> Basically, one should only turn this variable on after giving up on the
> possibility of getting any data out of the broken page itself. It would
> be folly to run with it turned on as a normal setting.

This statement should *definitely* go into the documentation for the
option, then...

--
Kevin Brown kevin(at)sysexperts(dot)com

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