[mythtv-users] auto-restarting mythbackend

[glen]

geary mail - arch linux


On Fri, Oct 16, 2015 at 11:10 AM, Jerome Yuzyk <jerome at supernet.ab.ca> 
wrote:
> On Friday, October 16, 2015 05:46:38 PM Gary Buhrmaster wrote:
>>  On Fri, Oct 16, 2015 at 12:15 AM, Jerome Yuzyk 
>> <jerome at supernet.ab.ca> wrote:
>>  > What are people doing about restarting mythbackend when it fails?
>> 
>>  I am curious as to how often you find it fails?  I cannot remember
>>  the last time (with 0.27) my BE has failed.  While there are almost
>>  certainly still bugs in the code, there was a lot of effort with 
>> 0.27
>>  to resolve the reported segfaults, and (using static analysis) fix
>>  possible (even if unlikely) failure paths.  I have seen systems with
>>  hardware issues where the BE has failed, but I believe that fixing
>>  the hardware is really the correct fix for that (the BE is just the
>>  canary in the coal mine.  Replacing the canary is not a good fix).
>> 
> 
> Trying out firewire recording from my DCX-3200, I've had a few, like 
> the one I provided as a sample. I can pretty much guarantee a crash 
> from some channels, after 0-byte recordings. At least if I can get 
> mythbackend to restart so later recordings aren't missed, I can ride 
> out the weekend and then put my HDPVR in place. I have a message 
> queued to report on my experiences with it.
> 
> Up until this round of experimenting I've only ever had the FE blow 
> out, and that was in my over-pushed 0.21 setup. But if I can get 
> auto-restart built in  I figure that's a good thing in any event.
> 
> --
> A little of Jerome's MythTV World: http://mythtv.bss.ab.ca
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i have similar issues with firewire on that box. my device and model 
id's are not in firewire.cpp, i won't know if adding them will help 
until they added by dev or i compile myself.

but, i only have problem when computer resumes from sleep. then if am 
home i would have to restart backend to get a successful firewire 
recording even though plugreport looks right. i also have priming 
script in the resume scripts. sometimes i have to run firewiretester 
several times (while tuned to same channel) before packets are sent.

you may benefit from 'priming' the firewire. i can send you the script 
that i found works best with that box. also what mode are you recording 
in ? broadcast or p2p. i find p2p is much more reliable.
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