CRC protection of data?

From: Henrik Jönsson <hjoensson(at)gmail(dot)com>
To: pgsql-novice(at)postgresql(dot)org
Subject: CRC protection of data?
Date: 2009-11-12 13:43:14
Message-ID: 2b1a7a060911120543m5f4809b2r3dcc0d8abbad36e6@mail.gmail.com
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Hi,

Is there any built-in support in Postgresql to calculate and verify a
checksum of the data read to and from the disc?
I found some posts regarding this that said there was some code
developed. But I can't see if this is in any release of pg.
http://postgresqlorg.blogspot.com/2008/09/re-hackers-block-level-crc-checks.html

Regards
Henrik

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