Re: Enabling Checksums
Heikki Linnakangas <hlinnakangas@vmware.com>
From: Heikki Linnakangas <hlinnakangas@vmware.com>
To: Jeff Davis <pgsql@j-davis.com>
Cc: Simon Riggs <simon@2ndQuadrant.com>, Greg Smith <greg@2ndquadrant.com>, PostgreSQL-development <pgsql-hackers@postgresql.org>
Date: 2013-03-04T21:22:01Z
Lists: pgsql-hackers
On 04.03.2013 23:00, Jeff Davis wrote: > On Mon, 2013-03-04 at 22:27 +0200, Heikki Linnakangas wrote: >> Yeah, fragmentation will certainly hurt some workloads. But how badly, >> and which workloads, and how does that compare with the work that >> PostgreSQL has to do to maintain the checksums? I'd like to see some >> data on those things. > > I think we all would. Btrfs will be a major filesystem in a few years, > and we should be ready to support it. Perhaps we should just wait a few years? If we suspect that this becomes obsolete in a few years, it's probably better to just wait, than add a feature we'll have to keep maintaining. Assuming it gets committed today, it's going to take a year or two for 9.3 to get released and all the bugs ironed out, anyway. - Heikki