Horton

Re: [HACKERS] WAL replay logic (was Re: Mount options for

Curt Sampson <cjs@cynic.net>

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From: Curt Sampson <cjs@cynic.net>
To: Bruce Momjian <pgman@candle.pha.pa.us>
Cc: Kevin Brown <kevin@sysexperts.com>, pgsql-performance@postgresql.org, pgsql-hackers@postgresql.org
Date: 2003-02-15T08:29:21Z
Lists: pgsql-hackers, pgsql-performance 
On Fri, 14 Feb 2003, Bruce Momjian wrote:

> Is there a TODO here, like "Allow recovery from corrupt pg_control via
> WAL"?

Isn't that already in section 12.2.1 of the documentation?

     Using pg_control to get the checkpoint position speeds up the
     recovery process, but to handle possible corruption of pg_control,
     we should actually implement the reading of existing log segments
     in reverse order -- newest to oldest -- in order to find the last
     checkpoint. This has not been implemented, yet.

cjs
-- 
Curt Sampson  <cjs@cynic.net>   +81 90 7737 2974   http://www.netbsd.org
    Don't you know, in this new Dark Age, we're all light.  --XTC