Re: How to use pg_upgrade for beta versions

On 07/26/2014 07:56 AM, René Leonhardt wrote:
> It has been recommended to pg_upgrade from 9.4 beta 1 to 2:
> http://www.postgresql.org/message-id/20e710fd3e4790ee1051aa1e107d3708@postgresql.org

It is recommended in the spirit of testing the changes to the pg_upgrade
code, so it is a soft recommendation. In any event I do not remember
pg_upgrade being integrated into the apt-get process. This is something
you will have to do separately.

>
> How do I that on the Ubuntu 14.04.1 PPA?
> http://www.postgresql.org/download/linux/ubuntu/

Are you actually using the PPA, I thought that only went up to 12.04?

Or are you using the Postgres repo?:

http://apt.postgresql.org/pub/repos/apt/

>
> Upgrading directly is not possible:
> $ sudo apt-get dist-upgrade

Not sure you want to do a dist-upgrade if you want to test pg_upgrade,
as it will want to replace the version of Postgres and lead to the ERROR
notice below.

> Preparing to unpack .../postgresql-9.4_9.4~beta2-1.pgdg14.04+1_amd64.deb ...
> ERROR: The database format changed between beta 1 and 2. Please dump
> your 9.4 clusters first and remove them before upgrading the package.
> dpkg: error processing archive
> /var/cache/apt/archives/postgresql-9.4_9.4~beta2-1.pgdg14.04+1_amd64.deb
> (--unpack):
>   subprocess new pre-installation script returned error exit status 1
> Errors were encountered while processing:
>   /var/cache/apt/archives/postgresql-9.4_9.4~beta2-1.pgdg14.04+1_amd64.deb
> E: Sub-process /usr/bin/dpkg returned an error code (1)
>
> Executing apt-get install -f afterwards shows the same error.

It would seem you would want to do a straight install of 9.4beta2 where
the package manager sets up a separate instance for it and then use
pg_upgrade to move the data from beta1 to beta2. Otherwise you could go
the dump/restore route.

>



--
Adrian Klaver
adrian.klaver@aklaver.com