[mythtv-users] Slave backend death kills master

[Robert Middleswarth]

I am seeing it also just added a bugzilla ticket on it.  with a 
backtrace.  Ticket # 238.  Hopefully someone will be able to figuire out 
why. 

Brad Templeton wrote:

>For a couple of months now, I have had an intermitted problem where
>the master backend will hang due to slave backend problems.   For
>example, if you make install on the slave without stopping it, the
>master will hang.
>
>I have not been able to pin the problem down very well, but yesterday
>it got very frustrating.  I had the master recording the Oscars in HDTV.
>As far as I know the slave was running happy, I had been using it earlier
>in the day, and it dhows no signs of trouble in its logs.
>
>However, as the Oscars are recording, at 7pm (1.5 hours in) the master
>wants to tell the slave to record 60 minutes.
>
>Here's abridged sections of the log
>
>2005-02-27 17:28:43.849 /dev/video32 ringbuf avg 0.549535% max 2.53125% samples 47982
>2005-02-27 17:30:02.105 Finished recording Oscar Countdown 2005 on channel: 2007
>2005-02-27 17:30:02.149 Changing from RecordingOnly to None
>2005-02-27 17:30:02.467 Started recording "The 77th Annual Academy Awards" on channel: 2007 on cardid: 2, sourceid 2
>2005-02-27 17:30:02.512 Channel(/dev/video32)::SwitchToInput(in 0): Error -1 while setting video mode (v2), "Invalid argument", trying v4l v1
>2005-02-27 17:30:02.513 Channel(/dev/video32)::SwitchToInput(in 0): Setting video mode with v4l version 1 worked
>2005-02-27 17:30:02.625 Changing from None to RecordingOnly
>2005-02-27 17:30:03.503 Reschedule requested for id 0.
>2005-02-27 17:30:04.026 Scheduled 139 items in 0.5 = 0.00 match + 0.47 place
>2005-02-27 17:30:11.371 Starting Commercial Flagging for "Oscar Countdown 2005" recorded from channel 2007 at Sun Feb 27 17:00:00 2005.
>2005-02-27 17:30:11.941 MainServer::HandleAnnounce Playback
>2005-02-27 17:30:11.970 adding: myth as a client (events: 0)
>2005-02-27 17:30:12.014 MainServer::HandleAnnounce FileTransfer
>2005-02-27 17:30:12.023 adding: myth as a remote file transfer
>2005-02-27 17:30:12.108 MainServer::HandleAnnounce Playback
>2005-02-27 17:30:12.119 adding: myth as a client (events: 0)
>2005-02-27 17:32:08.683 /dev/video32 ringbuf avg 0.592545% max 5.15625% samples 33822
>[mpeg2video @ 0x36c148]end mismatch left=-1
>[mpeg2video @ 0x36c148]Warning MVs not available
>2005-02-27 17:35:07.550 /dev/video32 ringbuf avg 0.549763% max 3.53125% samples 48063
>2005-02-27 17:37:03.718 MainServer::HandleAnnounce Playback
>2005-02-27 17:37:03.754 adding: myth as a client (events: 0)
>2005-02-27 17:37:03.761 MainServer::HandleAnnounce FileTransfer
>2005-02-27 17:37:03.763 adding: myth as a remote file transfer
>2005-02-27 17:38:06.400 /dev/video32 ringbuf avg 0.550199% max 3.6875% samples 48059
>2005-02-27 17:58:53.312 /dev/video32 ringbuf avg 0.54834% max 2.4375% samples 47874
>2005-02-27 18:00:05.606 MainServer::HandleAnnounce Playback
>2005-02-27 18:00:05.633 adding: TVWish as a client (events: 0)
>2005-02-27 18:00:05.640 Reschedule requested for id -1.
>2005-02-27 18:00:06.221 Scheduled 139 items in 0.5 = 0.30 match + 0.20 place
>2005-02-27 18:01:51.371 /dev/video32 ringbuf avg 0.547426% max 1.65625% samples 47846
>2005-02-27 18:04:49.428 /dev/video32 ringbuf avg 0.547737% max 2.375% samples 47846
>[mpeg2video @ 0x36c148]invalid cbp at 34 14
>
>adding pes stream at pid 0x31 with type 2
>adding pes stream at pid 0x34 with type 129
>2005-02-27 18:12:23.242 Finished, 5 break(s) found.
>2005-02-27 18:13:43.768 /dev/video32 ringbuf avg 0.549919% max 3.75% samples 47870
>2005-02-27 18:55:16.837 /dev/video32 ringbuf avg 0.547758% max 2% samples 47848
>2005-02-27 18:58:14.910 /dev/video32 ringbuf avg 0.547955% max 2.09375% samples 47850
>2005-02-27 18:59:31.836 Started recording "60 Minutes" on channel: 4005 on cardid: 1, sourceid 4
>2005-02-27 18:59:32.940 Slave backend: myth has left the building
>2005-02-27 18:59:32.943 Reschedule requested for id 0.
>Mutex destroy failure: Device or resource busy
>
>
>
>And then the master stops, the recording is terminated after 1.5 hours,
>and the slave didn't record 60 minutes either (a stub was left in the
>database though.)
>
>The only line in the slave's log is:
>
>2005-02-27 18:59:32.821 Changing from None to RecordingOnly
>
>
>
>Anybody had this problem?  It was very embarassing as I had invited people
>back from dinner to see the Oscars in accelerated HD.   We got back at
>8, so a core hour was lost.
>
>  
>
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