[mythtv-users] unstable backend

[Bill Meek]

On 04/19/2017 01:53 PM, Gabe Rubin wrote:
> On Wed, Apr 19, 2017 at 11:18 AM, Greg Oliver <oliver.greg at gmail.com> wrote:
>
>> On Wed, Apr 19, 2017 at 12:35 PM, Gabe Rubin <gaberubin at gmail.com> wrote:
>>
>>> Lately, my backend has been fairly unstable, with the frontend taking
>>> quite some time to display my recordings (basically seems like it has to
>>> restart the backend) and mythweb not displaying any recordings in the
>>> Recorded Programs section, even after a backend restart.  I have to restart
>>> the whole system (a combined FE/BE).  I am running version:
>>> mythtv-backend-0.28-12
>>>
>>> I can post my full log from the backend, but this seems like the relevant
>>> portion (the last part of the log):
>>>
>>> 2017-04-19 10:02:38.686676 I [26528/16485] MythSocketThread(78)
>>> mainserver.cpp:7656 (connectionClosed) - Monitor sock(de1090) 'Mythbox'
>>> disconnected
>>> 2017-04-19 10:05:26.116680 C [26528/26528] CoreContext
>>> signalhandling.cpp:305 (handleSignal) - Received Terminated: Code 0, PID 1,
>>> UID 0, Value 0x00000000
>>> 2017-04-19 10:05:26.117772 N [26528/26528] CoreContext
>>> main_helpers.cpp:730 (run_backend) - MythBackend exiting
>>>
>>>
>>>
>> Looks like it is being killed by PID1 - which is init or systemd depending
>> on your system.  You should have system logs or journal that tells you why
>> it is happening.  journalctl or files in /var/log/
>>
>>
>>
> I am running fedora, so using systemd.  Where would I find the logs in
> /var/log/ (/var/log/journal/ has a directory named
> 19a3360c5cac4dd7abd27b7d5b9aac98 and there does not seem to be readable
> files in it)?  When I use the journalctl command, i have to constantly
> space to get the next page of data.  It cuts out at April 5, with this as
> the last message (making me think there is some other issue going on):
>
>
> Apr 05 19:24:20 Mythbox /usr/libexec/gdm-x-session[1532]: (--)
> NVIDIA(GPU-0): ONKYO Corporation TX-NR525 (DFP-2): connected
> Failed to get journal fields: Bad message

journalctl has lots-o-options, but try this:

     journalctl --full --no-pager --unit mythtv-backend

Not sure about the April 5th comment. I'd look at the logging that
the backend is started with first:

     systemctl cat mythtv-backend

This may be of interest:

     grep ForwardToSyslog /etc/systemd/journald.conf

-- 
Bill