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Re: create tablespace fails silently, or succeeds improperly

From: Alvaro Herrera <alvherre(at)commandprompt(dot)com>
To: Dave Cramer <pg(at)fastcrypt(dot)com>
Cc: PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: create tablespace fails silently, or succeeds improperly
Date: 2010-10-18 15:31:12
Message-ID: 1287415803-sup-9023@alvh.no-ip.org (view raw or flat)
Thread:
Lists: pgsql-hackers
Hi Dave,

Excerpts from Dave Cramer's message of lun oct 18 12:23:40 -0300 2010:
> as seen below create tablespace does not throw an error or appear to
> do anything other than register the tablespace.
> 
> postgres(at)db01:~> less /opt/pg/data/jnj_indexes/PG_VERSION
> 8.4
> postgres(at)db01:~> /opt/pg91/bin/psql -p 5433
> psql (9.0.1)
> Type "help" for help.
> 
> postgres=# select version();
>                                                       version
> -------------------------------------------------------------------------------------------------------------------
>  PostgreSQL 9.0.1 on x86_64-unknown-linux-gnu, compiled by GCC gcc
> (GCC) 3.4.6 20060404 (Red Hat 3.4.6-11), 64-bit
> (1 row)
> 
> postgres=# create TABLESPACE jnj_indexes location '/opt/pg/data/jnj_indexes';
> CREATE TABLESPACE

IIRC the reason this works is that the tablespace code now creates a
version-specific subdirectory inside the specified directory.  This was
done to help binary upgrades.

-- 
Álvaro Herrera <alvherre(at)commandprompt(dot)com>
The PostgreSQL Company - Command Prompt, Inc.
PostgreSQL Replication, Consulting, Custom Development, 24x7 support

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