On Sun, Dec 18, 2011 at 12:19:32PM +0200, Heikki Linnakangas wrote: > On 18.12.2011 10:54, David Fetter wrote: > >On Sun, Dec 18, 2011 at 10:14:38AM +0200, Heikki Linnakangas wrote: > >>On 17.12.2011 23:33, David Fetter wrote: > >>>If this introduces new failure modes, please detail, and preferably > >>>demonstrate, just what those new modes are. > >> > >>Hint bits, torn pages -> failed CRC. See earlier discussion: > >> > >>http://archives.postgresql.org/pgsql-hackers/2009-11/msg01975.php > > > >The patch requires that full page writes be on in order to obviate > >this problem by never reading a torn page. > > Doesn't help. Hint bit updates are not WAL-logged.
What new failure modes are you envisioning for this case? Any way to simulate them, even if it's by injecting faults into the source code? Cheers, David. -- David Fetter <da...@fetter.org> http://fetter.org/ Phone: +1 415 235 3778 AIM: dfetter666 Yahoo!: dfetter Skype: davidfetter XMPP: david.fet...@gmail.com iCal: webcal://www.tripit.com/feed/ical/people/david74/tripit.ics Remember to vote! Consider donating to Postgres: http://www.postgresql.org/about/donate -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
