[mythtv-users] unexpected behaviour
Daryl McDonald
darylangela at gmail.com
Sun Nov 4 11:39:56 UTC 2018
On Sat, Nov 3, 2018 at 9:23 PM glen <glenb at glenb.us> wrote:
> On Sat, 2018-11-03 at 13:21 -0400, Daryl McDonald wrote:
>
>
>
> 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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> 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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>
> 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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> are you using xfs ? if not change to xfs and test.
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I'm using ext4 and have been for years without problems, its just since I
replaced a drive that was about to fail. I'm finding that the system
unmounts and remounts the drive from time to time. While using Kodi I see
on-screen notifications saying "removable media storage 2 successfully
removed", /etc/fstab has it mounted at boot, I used clonezilla to put the
files,bootloader, UUID, and label on the replacement drive. Is there
something else I need to do to keep the drive mounted? Storage 1 and 3
remain rock solid
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