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Message #02577
[Bug 470672] Re: mythbuntu starts frontend to fast
@Thomas Mashos:
These are some very good points. I was only concentrated on my problem
on my particular setup and did not think about the 'big picture'.
Hal is still in Lucid but not installed by default and deemed to be
deprecated. I agree that a solution should better not be based on it.
To define it in detail the dependencies are the following:
- mysql-backend needs to wait for the related database before starting.
I believe at the moment mysql-backend tries several times (don't know for how long) to reach the database if it is started before the db is available. During this time I believe the backend-end is however not listening for incoming connections. So this is basically already working. However there should be a way for clients that try to connect to get aware of such a situation.
- the frontend should wait until the related backend is ready.
There is a start script and config file for mythfrontend already. It should be an easy thing to enhance this in order to wait for a backend to be ready.
One very basic solution I could think of would be to change the startscript for mythfrontend to do the following:
- try to connect to the database
- try to connect to the backend
- do the above steps for a configurable time or amounts with sleeps in between.
The connects for the backend could maybe be done by the use of the python bindings.
For the database: can mythtv run with another db than mysql - I believe not? if yes then its more complicated, if no, this could be included in the python script for the backend (if the python bindings not already also try to open a mysql connection in parallel)
I would really try to help solving this bug also by providing a script
of any sort or doing an update to en existing one.
Please let me know who is responsible so we could agree on a solution
and I can then (if this is wanted) provide the implementation.
cheers,
schaze
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mythbuntu starts frontend to fast
https://bugs.launchpad.net/bugs/470672
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Status in “mythtv” package in Ubuntu: Triaged
Bug description:
Binary package hint: mythbuntu-common
I upgraded mythbuntu to 9.10. Now when I boot, mythwelcome is unable to connect to mysql and comes with a setup dialog. (first screen is choosing the language.) Starting mythwelcome or mythfrontend manually from a terminal works fine, since at that point mysql and mythtv-backend have started.
I tried delaying the start of mythwelcome in /usr/share/mythtv/mythfrontend.sh. I got it so far that mythwelcome only complains about not finding mythbackend.
My suspicion is that mythwelcome/mythfrontend start before mysql, mythbackend and/or lircd are correctly started. Either those should be started earlier, or the script that starts mythwelcome/mythfrontend should actively check for those.
If any other information is needed, please let me know.
Bert Haverkamp
P.S. possibly mythbuntu-common is not the appropriate package, but it is definitely a mythbuntu setup problem.