[Charlug] Upgrading old Ubuntu

[Dennis Clark]

On Fri, Jan 30, 2009 at 11:29 AM, Pierre Abbat <phma at phma.optus.nu> wrote:

> On Friday 30 January 2009 04:33:33 Bob Evans wrote:
> > I wouldn't put fiesty into your sources list unless absolutely
> > necessary. and even then, I'd do that after the upgrade. again, read
> > the sited URL...
>
> I'm going to try commenting out the "us.archive feisty" lines and
> putting "us.archive gutsy" lines at the end. If I need a feisty package
> before the upgrade, it'll fetch it from the first repository that has it,
> right?


It does not make sense to install new packages from an old release
immediately before upgrading to a newer release.

After you bring all your currently installed packages to their final
versions in feisty, there is no need to use the feisty repository any more.
The gutsy repository will contain any packages you might need for an
upgrade.

The order of repositories in sources.list has no effect of installation
priority. If you have multiple repositories listed in sources.list, the
default priority is to install the latest version of a package regardless of
which repository has it. This behavior is dangerous if you try to mix
repositories from different releases, and such mixing is unnecessary for
regular upgrades.


> Main thing I'm concerned about with Postgres is that it changes its file
> format every so often.


Package upgrade scripts ought to detect if you are upgrading from a version
that uses an older file format and offer to convert the files for you. While
have never performed a Postgres upgrade, I'd be extremely surprised if the
Postgres package upgrade scripts in Ubuntu did not have this functionality.

Cheers,

-- Dennis
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