Re: [HACKERS] PG_UPGRADE status?

From: Bruce Momjian <maillist(at)candle(dot)pha(dot)pa(dot)us>
To: Lamar Owen <lamar(dot)owen(at)wgcr(dot)org>
Cc: pgsql-hackers(at)postgreSQL(dot)org
Subject: Re: [HACKERS] PG_UPGRADE status?
Date: 1999-09-08 18:28:49
Message-ID: 199909081828.OAA17938@candle.pha.pa.us
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> I know Tom Lane has done some work on pg_upgrade -- the last message was
> on 8/2/99, and left the thread hanging.
>
> What is the current status of pg_upgrade in 6.5.x??
>
> I ask because the presence of a working pg_upgrade drastically reduces
> the work necessary to get postgresql upgrading working prpoerly in an
> RPM environment. I particular, the upgrade from RedHat 6.0 to RedHat
> 6.1 is going to be from postgresql 6.4.2 to 6.5.1. I do not forsee
> anyone successfully upgrading a RedHat 5.x installation to 6.1, as other
> things will break -- although I could be entirely wrong.

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.*.

--
Bruce Momjian | http://www.op.net/~candle
maillist(at)candle(dot)pha(dot)pa(dot)us | (610) 853-3000
+ If your life is a hard drive, | 830 Blythe Avenue
+ Christ can be your backup. | Drexel Hill, Pennsylvania 19026

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