[mythtv] Using my main mythtv box for development

Kevin Fox Kevin.Fox at pnl.gov
Mon Apr 23 16:11:36 UTC 2007

On Mon, 2007-04-23 at 01:02 +0100, Colin Guthrie wrote:
> Roo wrote:
> > When you upgrade you need to run mythtv-setup, this will upgrade the DB
> > Schema for you. After installing the newly compiled binaries and before
> > starting mythbackend just run mythtv-setup and watch the log file, if
> > the DB Schema needed to be updated you should see a log message stating
> > it was/is updated to version N.
> You shouldn't /need/ to run mythtv-setup to upgrade the schema. The main
> schema is stored in libmyth AFAIK and any myth progam (backend,
> frontend, setup) will undertake to update the schema. Certainly last
> time I upgraded and ran mythbackend it did the schema update.

I'd like to register a complaint about this feature. :)

One time when I was upgrading my system from .18 to .20, I upgraded one
of the frontends (xboxs) to .20 and was going to point it against a .20
test server. I didn't catch it quick enough in the boot, and it
connected to my real backend and then that frontend proceeded to upgrade
the schema in the database out from under the .18 backend, forcing me to
fast track the backend upgrade.

Most people I don't think will expect a frontend to do anything like
that. It would make much more sense for the frontend to complain and
quit rather then breaking a backend.

Just my 2 cents.

> > One thing that caught me out is:
> > It seems you need to compile mythtv first **and install** it before
> > compiling the plugins. When the plugins are compiled they use the myth
> > libraries from the installation directory. I didn't realise this until
> > recently when I had a problem compiling mythmusic, it wouldn't build
> > because it was using the old installed libraries instead of the newly
> > compiled libraries in the mythtv source tree.
> Make sure that you don't end up with two installs. I'm not sure where
> Gentoo puts it's installs (I'm guessing the whole distro is not in
> /usr/local!!) but you could end up with one install in /usr (your
> systems install) and another in /usr/local (what you build from svn).
> If you have two versions installed, compiling plugins could get
> confusing if they use the wrong version of the sources etc.
> I'd recommend purging your system myth before doing the final "make
> install" of svn so as to save your sanity ;)
> Col

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