Re: pg_migrator issue with contrib

From: Bruce Momjian <bruce(at)momjian(dot)us>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: Magnus Hagander <magnus(at)hagander(dot)net>, Dimitri Fontaine <dfontaine(at)hi-media(dot)com>, Josh Berkus <josh(at)agliodbs(dot)com>, Andrew Dunstan <andrew(at)dunslane(dot)net>, Brad Nicholson <bnichols(at)ca(dot)afilias(dot)info>, pgsql-hackers(at)postgresql(dot)org
Subject: Re: pg_migrator issue with contrib
Date: 2009-06-08 15:28:30
Message-ID: 200906081528.n58FSUq06473@momjian.us
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Tom Lane wrote:
> Bruce Momjian <bruce(at)momjian(dot)us> writes:
> > Tom Lane wrote:
> >> There was just some discussion about that on postgis-devel. I think the
> >> conclusion was that you would have to do the PostGIS update as a
> >> separate step. They intend to support both 1.3.x and 1.4.x on current
> >> versions of Postgres for some time, so in principle you could do it in
> >> either order.
>
> > Oh, yea, you can't go from PostGIS version 1.3 to 1.4 _while_ you do the
> > pg_migrator upgrade. It has to be done either before or after
> > pg_migrator is run. I wonder how I could prevent someone from trying
> > that trick.
>
> You don't need to, because it will fail automatically. They are using
> version-numbered .so files, so C-language functions referencing the 1.3
> .so will fail to load if only the 1.4 .so is in the new installation.

Nice. Something to be learned there. ;-)

--
Bruce Momjian <bruce(at)momjian(dot)us> http://momjian.us
EnterpriseDB http://enterprisedb.com

+ If your life is a hard drive, Christ can be your backup. +

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