Greg Stark wrote: > On Sun, Dec 27, 2009 at 8:13 PM, Bruce Momjian <br...@momjian.us> wrote: > > Well, I think the checksums are going in the item pointers, so there > > isn't any new storage space --- my guess is that the page version number > > will control how the backend stores the checksum. ?Basically the backend > > will need to read old and new page versions. ?I don't think this is > > something pg_migrator can handle cleanly. > > I thought our plan was to only read old page versions and > automatically rewrite them to new page versions. We'll have to add the > hooks and the page rewrite code to do that, no?
Well, the idea of only reading the old version is so we didn't have to carry around a lot of type-specific information in the backend, but I am not sure if that applies to a hint bit change. > Is that something we're comfortable adding in the final commitfest? Uh, no idea. It would be nice, of course. -- Bruce Momjian <br...@momjian.us> http://momjian.us EnterpriseDB http://enterprisedb.com + If your life is a hard drive, Christ can be your backup. + -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
