[linux-dvb] Re: Networking filesystems and vdr

[Klaus Schmidinger <Klaus.Schmidinger@cadsoft.de>]

Lars Bensmann wrote:
> 
> Hello,
> 
> unfortunately I don't know when it started, but for some time now, I have
> severe problems with vdr. My /video is NFS-mounted over a 100MBit Fast
> Ethernet and the traffic on the net is really low. (I tried SMBfs today as
> well, but it showed the same problems). After recording for some time (how
> long varies from 4 minutes to over an hour) I get
> 
> Aug  3 15:49:13 chewie vdr[16557]: buffer usage: 76%
> Aug  3 15:49:13 chewie last message repeated 36 times
> Aug  3 15:49:13 chewie vdr[16557]: buffer usage: 77%
> Aug  3 15:49:14 chewie last message repeated 49 times
> Aug  3 15:49:14 chewie vdr[16557]: buffer usage: 78%
> ....
> Aug  3 15:49:30 chewie vdr[16557]: buffer usage: 100%
> Aug  3 15:49:34 chewie vdr[16557]: ERROR (dvbapi.c,532): Unknown error 769
> Aug  3 15:49:38 chewie vdr[16557]: ERROR (dvbapi.c,532): Unknown error 769
> 
> After the last message, vdr stops writing anything to the files. The timer
> is still active, but nothing happens. After restarting vdr it continues
> recording.
> 
> I already increased the VDR buffer size to 5MB, but if it made a
> difference at all, the problem starts maybe a little later and the buffer
> usage increases more slowly.
> 
> I know vdr cannot do anything about a server not responding, it seems
> after it reached 100% it stops completely and doesn't try again.
>
> What I also think is strange, sometimes there is a gap between increased
> buffer usage:
> 
> Aug  3 04:01:24 chewie vdr[860]: buffer usage: 95%
> Aug  3 04:01:25 chewie last message repeated 49 times
> Aug  3 04:01:25 chewie vdr[860]: buffer usage: 96%
> Aug  3 04:01:25 chewie last message repeated 46 times
> Aug  3 04:01:25 chewie vdr[860]: buffer usage: 97%
> Aug  3 04:01:25 chewie last message repeated 7 times
> Aug  3 04:25:52 chewie vdr[860]: buffer usage: 97%
> Aug  3 04:25:52 chewie last message repeated 40 times
> Aug  3 04:25:52 chewie vdr[860]: buffer usage: 98%
> Aug  3 04:25:53 chewie last message repeated 50 times
> Aug  3 04:25:53 chewie vdr[860]: buffer usage: 99%
> Aug  3 04:25:53 chewie last message repeated 46 times
> Aug  3 04:25:53 chewie vdr[860]: buffer usage: 100%
> Aug  3 04:25:56 chewie vdr[860]: ERROR (dvbapi.c,532): Unknown error 769
> Aug  3 04:26:25 chewie last message repeated 5 times
> 
> There is a 24 minutes gap in there and vdr seemingly didn't decrease the
> buffer usage during this period. Should it flush the buffer if the
> bandwidth is available?

VDR only reports when the buffer usage exceeds the previously
highest value (it starts reporting at 75%). If the bandwidth
allows it, the buffer is of course flushed - there is just no
report about that.

> Does anybody have a working setup where vdr saves its files over the
> network?

I also use an NFS mounted volume as my video directory.
Sometimes I even record three programmes simultaneously
without any problems.

Klaus
-- 
_______________________________________________________________

Klaus Schmidinger                       Phone: +49-8635-6989-10
CadSoft Computer GmbH                   Fax:   +49-8635-6989-40
Hofmark 2                               Email:   kls@cadsoft.de
D-84568 Pleiskirchen, Germany           URL:     www.cadsoft.de
_______________________________________________________________


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