[mythtv-users] unexpected behaviour

[glen]

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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> > 
> > mythtv-users at mythtv.org
> > 
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> > 
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> > 
> > MythTV Forums: https://forum.mythtv.org
> 
> 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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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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