[mythtv-users] Watching recordings in progress

Jason Gillis jgillis at acm.org
Tue Feb 3 14:17:55 EST 2004

I wanted to drop a note to indicate that this issue is half resolved.  I had
tried using the latest CVS from last week (1/28, I believe) and the
recording in progress stopping problem has gone away.  That status is still
the same in .14, too, so I'm happy on that front.

In cases where recordings fail for some reason (haven't figured out why
things fail, and it's pretty rare now), deleting the partial programs still
causes problems.  It seems like the backend gets hung up somewhere.  I'm
going to spend some time trying to figure out if I can reproduce the problem
and get to the bottom of it.


Jason G. wrote:
>>>     So, my first question is:  Is this supposed to happen?
>> No. I do that all the time, and I've never had a recording up and
>> stop. Skipping forward gets tedious just after the program stops
>> recording and commercial flagging starts, but no, what you saw
>> shouldn't happen.
>>> (I imagine I'm supposed to
>>> be able to watch (from the beginning) something that's being
>>> recorded, and
>>> that the NFS setup I'm using is borking things up.)
>> No clue. I don't use an NFS setup, but I believe plenty of folks do,
>> and I've never heard of that happening... Try it again, see if you
>> can make it happen again, perhaps it was a one-time fluke.
> Bummer, because it's completely repeatable!  :(
> I see the following messages on the frontend:
> ----
> 2004-01-28 22:04:42 Connecting to backend server:
> (try 1 of 5)
> Error loading image file:
> v.png
> Input #0, mpeg, from
>   '/mnt/store//1012_20040128220000_20040128223000.nuv': Stream #0.0:
>   Video: mpeg2video, 720x480, 29.97 fps Stream #0.1: Audio: mp2,
> 48000 Hz, stereo, 384 kb/s
> Input #0, mpeg, from
>   '/mnt/store//1012_20040128220000_20040128223000.nuv': Stream #0.0:
>   Video: mpeg2video, 720x480, 29.97 fps Stream #0.1: Audio: mp2,
> 48000 Hz, stereo, 384 kb/s
> Using the PVR-350 decoder/TV-out
> 2004-01-28 22:04:51 Changing from None to WatchingRecording
> ----
> The backend log doesn't show any messages out of the ordinary.
> Back on the frontend, when I try to delete the partial recording, I
> get the following right before it hangs:
> 2004-01-28 22:06:37 ReadStringList timeout.
> That's something can probably chase down in the code, but I think the
> reason is that the backend has puked.  After restarting the frontend
> (without restarting the backend) a connection to the backend times
> out when trying to watch live TV.
>> I've not had a program fail to finish recording in ages, but when I
>> did, there were never any problems like this. Perhaps you've got some
>> disk performance issues...
> Could be.  I'll be rebuilding my server over the weekend once the new
> RAID 5 system gets here, so perhaps that will help.  I don't get the
> feeling, though, that the server is that burdened, though, as it's
> just running NFS and largely idle (the mythbackend and frontend are
> on the same box).  I think that the only times that recordings
> haven't succeeded, it's been due to this problem.  I have noticed,
> though, that sometimes the backend believes that it's still
> recording, even though it isn't.  In those cases, the frontend
> doesn't want to play live tv because it believes that a recording is
> in progress.  Restarting the frontend doesn't help.  The backend
> status page (port 6544) even says it's not recording.
> I think I'll try grabbing the latest CVS for myth and see what that
> does for me...
> J
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