[mythtv-users] MythTV always fo change channel in LiveTV

[Glenn Sommer]

I've tried both with  and without actimeo=0, but that makes no difference.
MythTV always fails to change channel.

So, I'm still looking for either a way to make MythTV use NFS more
reliable - or always stream from the backend?

2011/6/10 Michael T. Dean <mtdean at thirdcontact.com>:
> On 06/10/2011 06:54 AM, Glenn Sommer wrote:
>> I have a setup with a frontend NFS mounting the server.
>>
>> fstab on the frontend looks like this:
>> mediecenter:/exports/storage   /mnt/storage      nfs    intr,sync
>> mediecenter:/exports/mythtv   /mnt/mythtv      nfs    intr,sync
>>
>> exports on the server looks like this:
>> /exports      10.45.206.0/24(rw,fsid=0,secure,no_subtree_check,sync,no_root_squash)
>> /exports/storage
>> 10.45.206.0/24(rw,nohide,insecure,no_subtree_check,sync,no_root_squash)
>> /exports/mythtv
>> 10.45.206.0/24(rw,nohide,insecure,no_subtree_check,sync,no_root_squash)
>>
>>
>> Now, when-ever I enter LiveTV - the initial channel always works as
>> expected. But, MythTV always fails to change channel.
>
> If you use NFS for Live TV recordings storage, you must configure the
> mount to not cache file system attributes.
> http://www.mythtv.org/docs/mythtv-HOWTO-23.html#ss23.9 (specifically the
> actimeo part).
>
>> A log from the INITIAL tune: http://pastebin.com/eBEsv2mp
>> A log from the channel change: http://pastebin.com/pdKbRinH
>>
>> Notice the frontend expects the mpeg file to be present from the
>> start(when changing channel)... It does NOT wait for data being put
>> into the file first. (meaning it cannot fill the buffer).
>>
>> As a workaround, I tried unmounting (thereby forcing the frontend to
>> stream from the backend)... This fixed the issue - and the frontend
>> will correctly wait for data.
>>
>>
>> So, anyone know what could be causing the frontend to never wait for
>> data when changing channel?
>> Anyone know of there's an option to FORCE streaming from the backend
>> (as we had in 0.23) ?
>>
>
> Your file system refuses to check for the file because you didn't tell
> NFS to keep checking.  :)
>
> Mike
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