[mythtv-users] Backend quits functioning

[Mark Knecht]

Hi all,
   First, thanks Gavin for the script idea. I may have to try that.

   I wonder if anyone else see this problem?

1) Backend is running and recording say 2 hour-long programs at 8PM

2) Two people are watching two separate prerecorded programs on
frontend only machines.

3) Two programs are queued to record at 9PM

9PM comes:
a) The 9PM recordings appear to start, looking at disk access, but
don't actually record
b) mythcommflag starts on the two 8PM shows
c) Both people watching the precorded shows lose connection with the
backend and cannot access any programs even if they quit and restart
the remote frontends
d) mythfrontend cannot connect to the backend server even on the backend machine

I restart the backend. The 9PM recordings start but miss the front
portion and have to be deleted.

Anyone else have this sort of problem? No messages in the log files.
Everything about the backend seems to go away, except there is disk
access consistent with recording the programs.

- Mark
On 5/29/06, Gavin Haslett <gavin at nodecaf.net> wrote:
> Well, I had the same problem myself when I first started running 0.18. I
> dealt with it and worked out a little workaround... you can see my blog
> entry comments regarding this at the following link;
>
> http://www.nodecaf.net/blog/?postid=12
>
> The key part is the comments at the bottom; it contains a little script
> to "kick" the backend back on. I just schedule the script in a cron job
> that runs every minute. No problems. Well, sometimes the backend would
> die while watching TV, then I'd just wait a minute and try again...
> worked well.
>
> Now, I will say for the record that all these problems were lessened
> with 0.18.1, and disappeared completely with my upgrade to 0.19. I have
> had one instance of a backend death since 0.19, but I think that was
> related to a problem I was having with the /var filesystem (lots of
> small files overloaded the journal causing it to error with "out of
> space" errors with only 70% filesystem space showing in use... turned
> out to be Sendmail temp files!)
>
> Hope this helps!
>
> Gavin
>
>
> Austin Roberts wrote:
> >
> > Hi,
> > I'm running MythTV 0.18 on an Ubuntu Dapper Drake beta system. I seem
> > to have three different kinds of issues in which the backend stops
> > functioning.
> >
> > The first is that it just quits. The daemon dies, and it's gone. It
> > never seems to do this in the middle of recording something, so if
> > that were the extent of my problems I'd just set up a monitor to
> > restart it when it dies.
> >
> > The second (and most frequent) scenario is that it doesn't quit, but
> > somehow "loses" the list of shows its supposed to record, and doesn't
> > record anything until I restart the backend.
> >
> > The third scenario has only happened twice, but what happens is that
> > it records the right timeslot on the same channel as the last show it
> > recorded. This is not consistent. Say I'm going to be recording four
> > shows, all on different channels. The first is fine, the second
> > records on the same channel as the first, but the third and fourth
> > record on their own channels.
> >
> > In all the searching for answers I've done, I've seen some other
> > people mention problems with Via Motherboards, which is what I have
> > (and getting another motherboard is not an option at the moment).
> >
> > Typically, I like to do my own trouble shooting as much as possible,
> > but I've not found anything to work with. I can't reproduce the
> > problem, and it doesn't seem to be creating any logs for me to work
> > with. Can anyone help me with any of these problems?
> >
> > -Austin
> >
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