Andrew Dunstan wrote: > > > Bruce Momjian wrote: > > For example, I assume there > > will be some major version of Postgres where pg_migrator will not work > > at all. > > > > > > We need to be thinking more now about such a contingency. Postgres use > in very large installations is now at such a level that requiring a > pg_dump/pg_restore is really not an option for many users. If > pg_migrator is not always going to work then we need to be addressing > that now, or else it is at best a stop-gap. ISTM some sort of page > layout versioning scheme might be at least part of what we'll need in > the medium term.
Yes, my bet is that when we do need to change the page format, we will either use a conversion-on-read process or some external tool to do the conversion. pg_migrator does have code to do page conversions but it has never been used. If you are using pg_migrator in copy mode, we might be able to do page conversion during the copy, but for link mode, that is not possible. -- Bruce Momjian <br...@momjian.us> http://momjian.us EnterpriseDB http://enterprisedb.com -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
