[mythtv] Error in safe_read and writeblock

Geoffrey Kruse gkruse at gmail.com
Thu Mar 10 16:37:48 UTC 2005


I get a similar safe_read() error when commercial flagging on a remote 
frontend.  Could this be related?

Geoff
On Mar 10, 2005, at 5:09 AM, Steven wrote:

> Brian C. Huffman wrote:
>
>> I'm running CVS from the evening of the 8th of March however I've 
>> seen this for
>> some time, I think.
>> If I allow the ringbuffer to fill while watching livetv and then I 
>> rewind all
>> the way to the beginning of the ringbuffer (100%), it freezes for a 
>> while and
>> once it returns if I once again hit rewind, then I see a couple of 
>> things.  the
>> status indicator shows over 100%full and I see the following messages 
>> in the
>> backend log:
>>
>> ERROR: file I/O problem in 'safe_read()': Bad address
>> ERROR: file I/O problem in 'safe_read()': Bad address
>> ERROR: file I/O problem in 'safe_read()': Bad address
>> ERROR: file I/O problem in 'safe_read()': Invalid argument
>> ERROR: file I/O problem in 'safe_read()': Invalid argument
>> ERROR: file I/O problem in 'safe_read()': Invalid argument
>> 2005-03-10 07:05:34.043 WriteBlock zerocnt timeout
>> ERROR: file I/O problem in 'safe_read()': Bad address
>> ERROR: file I/O problem in 'safe_read()': Bad address
>> ERROR: file I/O problem in 'safe_read()': Bad address
>> ERROR: file I/O problem in 'safe_read()': Invalid argument
>> ERROR: file I/O problem in 'safe_read()': Invalid argument
>> ERROR: file I/O problem in 'safe_read()': Invalid argument
>> 2005-03-10 07:05:35.321 WriteBlock zerocnt timeout
>>
>> When it returns it seems that it's reading from the wrong point in 
>> the ring -
>> e.g. it's showing the point that I should be seeing at the end rather 
>> than the
>> beginning.
>> Brian
>>
>>
> Those are the same messages I see in my backend log when the live-tv 
> buffer reaches it's max size. Playback just stops working and 
> somethimes the backend crashes.
> Isaac said this week that he doesn't see the problem on his system so 
> I've been playing around with playback settings (AV Sync, Extra Audio 
> Buffer, etc...) but still haven't found a way to keep it from 
> crashing.
> I guess most pleople on this list don't use live-tv too often or have 
> their buffer large enough to never notice this problem.
>
> Steven
>
>
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