[mythtv-users] truncated recording

[Gary Greener]

REMOVE ME FROM YOUR MAIL LIST. MYTHTV.ORG HAS REPEATEDLY
REFUSED TO REMOVE ME FROM THEIR LIST. USERS BEWARE !!!


>________________________________
>
>

>________________________________
> From: Mark Wedel <mwedel at sonic.net>
>To: Discussion about MythTV <mythtv-users at mythtv.org> 
>Sent: Monday, February 17, 2014 8:40 PM
>Subject: Re: [mythtv-users] truncated recording
>  
>
>On 02/17/14 03:30 AM, Mike Perkins wrote:
>> On 17/02/14 02:45, Mark Wedel wrote:
>>>
>>>   A few nights ago, my recording of OTA olympic recording was truncated.  It
>>> would end after about 15 minutes.
>>>
>>>   Since I started watching it while it was still on, mythtv was claiming the
>>> space used was increasing, and after it finished recording, statedthe recorded
>>> size was about 25 GB.
>>>
>>>   However, using the info to find out the file name, and then finding the actual
>>> file in the filesystem, it was about 1 GB.  Mythtv itself did not state any
>>> errors with the recording.
>>>
>>>   There was plenty of space in the filesystem was was recording to (100+ GB), so
>>> it is not a case of running out of space.  And my other large olympic recordings
>>> have all been fine.
>>>
>>>   Any thoughts on cause or how to prevent this from happening in the future? I'm
>>> more concerned about having this happen to other programs I'm not watching
>>> immediately, and by the time I notice them shortened, it is too late to find
>>> them on repeats.  Since mythtv seems to have believed everything went fine, it
>>> wouldn't go and re-recorded such files.
>>>
>>>   Mythtv 0.26.1 on ubuntu
>>>
>> How long was your program? 1 Gb for an SD program works out at about half an
>> hour. The average rate for SD is around 2Gb/hour, HD can vary according to the
>> compression but can be around 8Gb/hour.
>
>  Overall, I think the program would have been 3.5 hours or so.
>
>  It was HD - and I did not look precisely how long the file was record, nor the 
>precise size. It may have been closer to a 10 minute recording and 1.5 GB in 
>size.  Though I don't think those precise measurements really have to do 
>anything with the problem at hand.
>
>>
>> Since myth thinks the recording finished ok, and 25Gb sounds a more reasonable
>> size than 1Gb for an Olympic session, perhaps you have a disk problem. Have you
>> done any hard disk checks recently?
>
>  There are no errors in the log messages or anything else to indicate a disk 
>problem, though that isn't to say that might not be the cause.
>
>  But in that case, I would expect that mythtv would see an error writing the 
>data out, and thus not presume the file was recorded OK.  Mythtv clearly 
>believed it was writing out data, yet the file itself does not reflect that.
>
>  I could certainly believe that a bad sector/read after the fact may create 
>this problem (mythtv is reading the data, gets an error, and ends playback). 
>But the created file on the disk was only ~1 GB, so clearly at some point pretty 
>early on, myth stopped writing to the file but did not indicate way.
>
>
>_______________________________________________
>mythtv-users mailing list
>mythtv-users at mythtv.org
>http://www.mythtv.org/mailman/listinfo/mythtv-users
>http://wiki.mythtv.org/Mailing_List_etiquette
>MythTV Forums: https://forum.mythtv.org
>
>
>    
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://www.mythtv.org/pipermail/mythtv-users/attachments/20140217/fb6fab00/attachment.html>