Re: [HACKERS] PG_UPGRADE status?

Bruce Momjian wrote:
> pg_upgrade will not work in converting from <= 6.4.* to 6.5.* because
> the on-disk date format changed in 6.5.  Hopefully, 6.6 will allow
> pg_upgrade for 6.5.* databases.  We try not to change the on-disk
> format, but sometimes we have to.  MVCC required it for 6.5.*.

Ok, answers my question.  It would be nice to be able to say:
pg_upgrade --source-pgdata=/var/lib/pgsql-old --pgdata=/var/lib/pgsql
and have any version PostgreSQL database converted to the newest, but
maybe that's a pipe dream.  Sure would make upgrades easier, on
everybody, not just RedHatters -- such as those who have large amounts
of large objects. 

If I were a better C coder, and had more experience with the various
versions' on-disk formats, I'd be happy to try to tackle it myself. 
But, I'm not that great of a C coder, nor do I know the data structures
well enough.  Oh well.

Thanks much!

Lamar Owen
WGCR Internet Radio