[mythtvnz] 2 backends with 1 HDHomerun

[Stephen Worthington]

On Wed, 7 Sep 2016 17:20:09 +1200, you wrote:

>On 7 Sep 2016 5:15 pm, "skooobie doo" <skooobie at gmail.com> wrote:
>
>> Do you mean like docker. I have used docker a lot and love it for
>> virtualisation. But it wouldn't be good for accessing /dev I would think
>> although haven't tried this. Mythtv doesn't own the devices like tuners so
>> having two backends wouldn't be an issue. Until both try to access at the
>> same time. I guess the only way to know is to try...
>>
>> On 7/09/2016 09:34, "Robert Fisher" <robert at fisher.net.nz> wrote:
>>
>>> I am thinking about creating a virtual machine backend to test and play
>>> without disrupting my stable main server.
>>> Is it OK to have two backends using one HDHomerun?
>>>
>>> --
>>> Robert Fisher

>No I was thinking of MythBuntu in Virtualbox.
>
>Rob Fisher

With network tuners, VirtualBox should be fine.  You should probably
set up the VirtualBox networking to bridge onto the same network the
PC it is running on uses, so VirtualBox can see the network tuners
properly without needing routing tables.  You can also use USB tuners
if you have installed the VirtualBox plugin to allow USB passthrough.
To share the use of a tuner, you have to make sure that both things
using the tuner will not try to use it at the same time.  In MythTV,
that means making sure that the option to gather EIT EPG is turned off
for that tuner, and also the option to only own the tuner when using
it is turned on.  Those options are found in mythtv-setup > Capture
Cards > select the card > Recording Options and for normal tuners are:

Use DVB card for active EIT scan
Open DVB card on demand

respectively.  As I do not have any network tuners, I do not know if
those options are there for a network tuner or not.

And, of course, do not schedule recordings to use the same tuner at
the same time.