On Wed, Dec 2, 2009 at 11:08 AM, Simon Riggs <si...@2ndquadrant.com> wrote: > On Wed, 2009-12-02 at 10:48 -0500, Robert Haas wrote: >> Well, that's sort of a circular argument. If you're going to reserve >> space with a pre-upgrade utility, you're going to need to put the >> pre-upgrade utility into the version you want to upgrade FROM. If we >> wanted to be able to use a pre-upgrade utility to upgrade to 8.5, we >> would have had to put the utility into 8.4. > > Don't see any need to reserve space at all. > > If this is really needed, we first run a script to prepare the 8.4 > database for conversion to 8.5. The script would move things around if > it finds a block that would have difficulty after upgrade. We may be > able to do that simple, using fillfactor, or it may need to be more > complex. Either way, its still easy to do this when required.
I discussed the problems with this, as I see them, in the same email you just quoted. You don't have to agree with my analysis, of course. ...Robert -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
