[mythtv-users] Live TV problem

[Justin Moore]

>
> >> This is the backend log at the time of a stall:
> >>
> >>     Dec 13 17:52:54 12000mvd-mbe mythbackend: mythbackend[7520]: N
> >>     Expire autoexpire.cpp:641 (SendDeleteMessages) Expiring 0 MB for
> >>     1731 at 2014-12-14T01:51:38Z => "2014 Heisman Trophy Presentation"
> >>
> >>     Dec 13 17:54:53 12000mvd-mbe mythbackend: mythbackend[7520]: W
> >>     ProcessRequest ringbuffer.cpp:1100 (WaitForReadsAllowed)
> >>     RingBuf(/var/lib/mythtv/livetv/1731_20141214015139.mpg): Taking
> >> too long to be allowed to read..
> >
> > I have same problem, please see
> > https://code.mythtv.org/trac/ticket/12295
>
> without backend log, your report is incomplete.
>
> Here, you have the backend tacking a very long time to write to disk.
> As such, the frontend or backend can't read that recording (it hasn't
> been written to disk yet) and so things are stalling.
>
> Too slow computer or failing / broken hard disk is the most likely
> cause of the problem
>

FWIW I'm seeing identical problems on my Fedora system. I did not see these
problem under the combination of the 3.15.10-201 kernel/0.27.3 backend, but
they started appearing when I upgraded to the 3.17.6-200 kernel/0.27.4
backend combination. The same update command pulled in both (and a
subsequent one delete the old kernel) so I can't pull them apart.

However this does indicate a situation where the hardware stayed the same
and a software upgrade took the system from a working to a non-working
state.
-jdm


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