Jonah H. Harris wrote:
Rather than potentially letting this slide past 8.4, I threw together
an extremely quick-hack patch at the smgr-layer for block-level
checksums.

One hard problem is how to deal with torn pages with non-WAL-logged changes. Like heap hint bit updates, killing tuples in index pages during a scan, and the new FSM pages.

Currently, a torn page when writing a hint-bit-updated page doesn't matter, but it would break the checksum.

--
  Heikki Linnakangas
  EnterpriseDB   http://www.enterprisedb.com

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