[mythtv-users] unexpected behaviour

Sat Nov 3 17:21:57 UTC 2018

On Sat, Nov 3, 2018, 9:00 AM Daryl McDonald <darylangela at gmail.com wrote:

>
>
> On Fri, Nov 2, 2018, 9:05 PM George Bingham <georgeb1962 at gmail.com> wrote:
>
>>
>> -- George
>>
>>
>> On Fri, Nov 2, 2018 at 4:07 PM Daryl McDonald <darylangela at gmail.com>
>> wrote:
>>
>>>
>>>
>>> On Fri, Nov 2, 2018, 9:36 AM glen <glenb at glenb.us wrote:
>>>
>>>> On Fri, 2018-11-02 at 09:11 -0400, Daryl McDonald wrote:
>>>>
>>>>
>>>>
>>>> On Thu, Nov 1, 2018, 10:26 PM Stephen Worthington <
>>>> stephen_agent at jsw.gen.nz> wrote:
>>>>
>>>> On Thu, 1 Nov 2018 11:11:23 -0400, you wrote:
>>>>
>>>> >Greetings mythizens, I got 0-byte recordings for three shows airing
>>>> between
>>>> >10 &11 pm last night.
>>>> >This was co-incident with me switching over to Kodi, and starting my
>>>> VPN,
>>>> >and streaming a show I had missed, I can wrap my head around losing the
>>>> >hdhr (network tuner) recording but the other two were on internal tuner
>>>> >cards. Is this normal behaviour?
>>>> >
>>>> >Does any one else using Myth and Kodi on the same box have suggestions?
>>>> >
>>>> >TIA  Daryl
>>>>
>>>> MythTV uses tuners in order, and does not ever try another tuner when
>>>> one fails.  So if the first tuner is a network one and you have
>>>> somehow screwed up the network access to the tuner, then that could
>>>> explain what happened.  When you say the other two recordings were on
>>>> internal tuner cards, how are you working out what card was used for
>>>> the recordings?  Were the recordings from a different source that
>>>> needed to use the internal cards?  When you get a failed recording,
>>>> you can find the tuner it attempted to use in the logs, or you can go
>>>> to the recording and use the I command twice (and then scroll down if
>>>> necessary) to see the tuner.
>>>>
>>>> How do you use a VPN?  If it is run from the MythTV box then it is
>>>> likely that setting up the VPN connection will have changed the
>>>> routing on the MythTV box in a way that prevented access to the HDHR
>>>> tuner.  The standard way the VPNs work is to divert all traffic
>>>> outside the box to the VPN connection.  Often you can set them up so
>>>> that local traffic on your network will not go via the VPN, but you
>>>> will have to do extra configuration to do that.
>>>>
>>>> Another consideration is if you have storage group locations that are
>>>> stored over network connections to other boxes on your network. MythTV
>>>> has problems with network locations not being accessible.  If
>>>> activating your VPN caused network storage groups to be inaccessible,
>>>> but mythbackend kept trying to access them, that causes mythbackend to
>>>> run extremely slowly due to it continually locking up in a bit of code
>>>> that is trying the network connection and then failing. Each time the
>>>> connection fails, it can move on and do a little more work, but as
>>>> soon as it tries the connection again, it locks up again.  Only part
>>>> of mythbackend is affected, but that includes the threads that do
>>>> recordings, so all recordings fail.  As mythbackend tries to access
>>>> all storage groups in that code, it does not matter if the networked
>>>> storage group is only used for videos or pictures - it will still
>>>> cause access to the recording storage groups to fail.
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>>>>
>>>>
>>>> My only network component is the HDHR, everything else in in the
>>>> combined FE/BE, internal cards have UDEV rules and are used first, before
>>>> the HDHR. Storage is three 1TB drives, internal, one of which I just
>>>> replaced (impending failure) and curiously when I used Kodi it unmounted
>>>> storage2 of it's own volition at the time of the failure. I doubt that all
>>>> three failed recordings were going to the one drive, as they were
>>>> simotanious, just something else to scratch the head with. VPN is on the
>>>> myth/kodi box only and engaged when needed through the unity bar.
>>>>
>>>>
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>>>>
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>>>>
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>>>>
>>>>
>>>> MythTV Forums:
>>>>
>>>> https://forum.mythtv.org
>>>>
>>>>
>>>> why don't you test each tuner independent of myth. stop the backend and
>>>> test the tuners to see they are receiving signal. with hdhomerun you can
>>>> use the hdhomerun_config_gui util. and there are methods for the ones
>>>> directly attached. if those work properly, take a look at your mythtv-setup
>>>> and make sure the tuner setup is what you think and the storage directories
>>>> are correct. then start the backend and test. on the storage verify the
>>>> permissions are good for your storage directories. run mythtv-setup under
>>>> user that is running backend
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>>>
>>>
>> I have a similar issue from time to time. I have one card that has two
>> tuners on it, but can do up to 3 recordings if two of them share a
>> multiplex. This often  happens starting at 7:00 where there will be three
>> shows all starting at the same time. Often one of them would not tune
>> within the tuning time out period and I am guessing that since it starts
>> each recording nearly at the same time that there must be additional time
>> allowed or something. Anyway, I now have one of the recordings set to start
>> a minute early and since I made that change, it hasn't missed out on any
>> recordings.
>>
>> Not sure if that's happening to you or not, but since it took place when
>> you have multiple recordings starting at the same time, maybe stagger them
>> a bit by starting one of them a minute early.
>>
>> HTH,
>>
>> George
>>
>>
>>
>>
>>>
>>> this was a one time episode, all is working as expected now, I think I
>>> will check the permissions though.
>>>
>>>>
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>>>
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>
> Interesting to know George, but for years now I have recorded by SD time,
> 3 or even 4 episodes at the same time without incident
>
> I may have spoke to soon, it looks like my problems may be related to the
> storage drive replacement. The last two news recordings have been
> unwatchable, intermitten freeze-ups until inability to play at all, while,
> a football recording made the same night a couple hours later plays great.
> I'm going to use disks to check it out and am open to suggestions for
> confirming if the new drive is a lemon or not.   TIA  Daryl
>

Maybe its just a coincidence, because the file system on the new drive
checks OK and smartmontools doesn't find any fault.?

>
>
>>
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