Re: Block-level CRC checks

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