[mythtv-users] Problems with multiple pvr cards

[Tom Lichti]

Brian Walter wrote:
> Tom Lichti wrote:
>   
>> Brian Walter wrote:
>>   
>>     
>>> Well, I think I have isolated it to something in the disk subsystem.  I 
>>> upped the default write buffer in libmythtv, and, lo and behold, the 
>>> error now only occurs once every 30 minutes...
>>>   
>>>     
>>>       
>> Is your backend also running mysql? If so, and the errors are occurring 
>> on the half hour, it's likely the scheduling queries that are causing 
>> the error. I have 2 PVR-250's, 1 PVR-150, and an HDHR with one HD and 
>> one QAM/SD tuner setup, and I can record from all 5 at once with only 
>> very occasionally getting a buffer problem (which does not take down the 
>> whole box, btw), but I have the database on another machine, and I am 
>> running a RAID5 disk, so it can be done.
>>
>> Tom
>>
>> _______________________________________________
>>   
>>     
> Tom,
>
> Yeah, I'm beginning to think RAID might solve a lot of problems.  
> There's nothing else running on the backend except the backend.  Mysql 
> is on another machine, as is all the commflag jobs.
>   
Hrm. If you have multiple drives in the backend, you could just use 
storage groups (assuming you are running a somewhat recent version of 
SVN MythTV) then it could be much simpler than a RAID setup. Mine is 
software RAID, btw.

Tom