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Re: Upgrading database format on PostgreSQL 8.1 on FC6

From: Arjun Datta <arjun(at)greatgulfhomes(dot)com>
To: Steve Crawford <scrawford(at)pinpointresearch(dot)com>
Cc: pgsql-novice(at)postgresql(dot)org
Subject: Re: Upgrading database format on PostgreSQL 8.1 on FC6
Date: 2008-08-01 22:10:16
Message-ID: (view raw, whole thread or download thread mbox)
Lists: pgsql-novice
Steve Crawford wrote:
> Arjun Datta wrote:
>> Hi,
>> I have an older server I am trying to restore a dump onto.
> A _filesystem_ dump of the PG data files of or a _PostgreSQL_ dump 
> using pg_dump/pg_dumpall? This sounds like a problem stemming from a 
> filesystem dump.
> If it is a file-system dump, you will need to restore the files into 
> the server's data directories. The PG server version must match the 
> major version the file-system came from. Additionally, you will 
> probably need to attempt the restore onto a machine of the same 
> architecture. Even then, you may have problems - especially if the 
> dump was made while PG was running.
> If you have a running version of the database somewhere you will be 
> better off using the pg_dump/pg_dumpall tools to do the dump (and if 
> migrating to a newer version of PG, use the pg_dump/pg_dumpall from 
> the newer PG version) then restore from that dump.
> If you don't have the data in a currently functioning PG server and 
> you do succeed in recovering the data, do a PostgreSQL dump ASAP.
> Cheers,
> Steve

Hi Steve,

Thanks for the response.  I should have been clearer initially.

I have a PG dump (using pg_dumpall) from a PostgreSQL 7.3.4 server on 
Redhat 7.2 that I am trying to restore.

But on the newer machine (I cannot verify if postgres has ever been run 
on it or if it did when last), even before I try to restore, I notice 
that on startup I get the following error.

[root(at)devdb3 8.1]# service postgresql start

An old version of the database format was found.
You need to upgrade the data format before using PostgreSQL.
See /usr/share/doc/postgresql-8.1.10/README.rpm-dist for more information.

So, even without getting to the restore stage using psql as outlined here:

I would like to fix the above error first.


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Next:From: Tom LaneDate: 2008-08-01 22:16:59
Subject: Re: Upgrading database format on PostgreSQL 8.1 on FC6
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