Skip site navigation (1) Skip section navigation (2)

Re: wal_checksum = on (default) | off

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: pgsql-hackers(at)postgresql(dot)org, "Simon Riggs" <simon(at)2ndquadrant(dot)com>
Cc: pgsql-patches(at)postgresql(dot)org
Subject: Re: wal_checksum = on (default) | off
Date: 2007-01-04 15:00:56
Message-ID: 16797.1167922856@sss.pgh.pa.us (view raw or flat)
Thread:
Lists: pgsql-hackerspgsql-patches
"Simon Riggs" <simon(at)2ndquadrant(dot)com> writes:
> In this thread, I outlined an idea for reducing cost of WAL CRC checking
> http://archives.postgresql.org/pgsql-hackers/2006-10/msg01299.php
> wal_checksum = on (default) | off

This still seems awfully dangerous to me.

> Recovery can occur with/without same setting of wal_checksum, to avoid
> complications from crashes immediately after turning GUC on.

Surely not.  Otherwise even the "on" setting is not really a defense.

			regards, tom lane

In response to

Responses

pgsql-hackers by date

Next:From: Tom LaneDate: 2007-01-04 15:26:50
Subject: Re: Tabs or Spaces
Previous:From: Tom LaneDate: 2007-01-04 14:56:18
Subject: Re: [HACKERS] Patch to log usage of temporary files

pgsql-patches by date

Next:From: Simon RiggsDate: 2007-01-04 15:56:39
Subject: Re: wal_checksum = on (default) | off
Previous:From: Tom LaneDate: 2007-01-04 14:56:18
Subject: Re: [HACKERS] Patch to log usage of temporary files

Privacy Policy | About PostgreSQL
Copyright © 1996-2014 The PostgreSQL Global Development Group