Looking for speakers on High Performance Computing at GTALUG

[Christopher Browne]

On Mon, Jan 25, 2010 at 5:38 PM, Lennart Sorensen
<lsorense-1wCw9BSqJbv44Nm34jS7GywD8/FfD2ys at public.gmane.org> wrote:
> I know that's what he meant.  I still was wondering what a distrusted
> filesystem would look like.  Perhaps NFS or CIFS would come to mind. :)

There has been some ongoing discussion of this with respect to PostgreSQL.

This has been on the ToDo list for some time, with discussion as
recent as last month.

Add optional CRC checksum to heap and index pages
One difficulty is how to prevent hint bit changes from affecting the
computed CRC checksum.
http://archives.postgresql.org/message-id/19934.1226601952%40sss.pgh.pa.us
http://archives.postgresql.org/pgsql-hackers/2008-10/msg00002.php
http://archives.postgresql.org/pgsql-hackers/2008-10/msg01028.php
http://archives.postgresql.org/pgsql-hackers/2008-11/msg00524.php
http://archives.postgresql.org/pgsql-hackers/2008-12/msg01101.php
http://archives.postgresql.org/pgsql-hackers/2009-12/msg00011.php

The discussion hasn't settled into offering much of a way to
*implement* checksums to get real use out of them yet.  Indeed, it has
had a tendency towards circular arguments, from one perspective or
another:
http://archives.postgresql.org/pgsql-hackers/2009-12/msg00042.php

I'm not quite certain I properly understand what a "Torn Page" is :-0
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