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Re: Enabling Checksums

Bruce Momjian <bruce@momjian.us>

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From: Bruce Momjian <bruce@momjian.us>
To: Ants Aasma <ants@cybertec.at>
Cc: Simon Riggs <simon@2ndquadrant.com>, Jeff Davis <pgsql@j-davis.com>, Greg Smith <greg@2ndquadrant.com>, Heikki Linnakangas <hlinnakangas@vmware.com>, PostgreSQL-development <pgsql-hackers@postgresql.org>
Date: 2013-04-10T14:23:42Z
Lists: pgsql-hackers 
On Wed, Apr 10, 2013 at 01:15:12PM +0300, Ants Aasma wrote:
> > This work needs to happen now, since once the checksum algorithm is set we
> > won't easily be able to change it.
> 
> The page checksum algorithm needs to be decided now, but WAL CRCs and
> full page writes can be changed in 9.4 and don't need to be perfect on
> the first try.

I can confirm that --- pg_upgrade doesn't copy any of the WAL stream
from old to new cluster.

-- 
  Bruce Momjian  <bruce@momjian.us>        http://momjian.us
  EnterpriseDB                             http://enterprisedb.com

  + It's impossible for everything to be true. +