| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | Bruce Momjian <bruce(at)momjian(dot)us> |
| Cc: | PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: PG_MODULE_MAGIC checks and pg_migrator |
| Date: | 2010-01-15 05:45:54 |
| Message-ID: | 20673.1263534354@sss.pgh.pa.us |
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| Lists: | pgsql-hackers |
Bruce Momjian <bruce(at)momjian(dot)us> writes:
> For example, right now pg_migrator can migrate to 8.4 and 8.5, but there
> is no way to distribute a binary that will migrate to both because you
> need different shared libraries with different PG_MODULE_MAGIC values.
[ yawn... ] By the time 8.5 (9.0?) ships, this will probably not be
true. Quit stressing about it and figure on shipping a pg_migrator
per version.
> I am not sure what to suggest except perhaps that there be some way to
> link in a shared object without the magic block checks.
We are *not* doing that. The potential for error, and costly debug
time, greatly outweighs any possible savings.
regards, tom lane
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