[mythtv-users] 2 Backends, 1 backend use the serial port of the other?

Jason Sharpe mythtv.list at gmail.com
Mon Dec 19 01:26:48 EST 2005


I am 98% done with my mythtv whole house setup! I have learned alot and look
forward to tweaking this sucker out!

I have 2 standalone backends, the master has a DCT3200 via firewire and a
HD-3000 (OTA) in it. Both inputs working pretty flawlessly (knock on wood).
I intend to have the master hold all of the recordings from the 2 BEs (about
1TB in the master so that should be enough for now)

I wanted to setup a slave BE to do all the transcoding, Comm flagging,
nuvexport etc so the master BE can focus on recording. I find that 80% of my
recordings take place on nights and weekends  along with 100% of the viewing
at the same time so why not let the slave do the other tasks while the
master is hard at work recording and serving to the frontends.

One of the last steps of this entire project is turning off the TiVo (YAY!)
and moving my DishNetwork receiver onto myth. I have read of the headaches
of getting a HD-3000 (using DVB drivers) and a PVR-250 working in the same
box so I installed a PVR-250 into the slave BE.

To start, I am not running LIRC on any frontend or backend for remote
control use. I have PS/2 IR keyboards and learning remotes to make it easy.
(that way I can whip out the IR keyboard and use it to browse the web/email
when I I don't want to fire up my laptop.)

I have a serial IR blaster from www.irblaster.info that I need to use to
control the DishNetwork box. My issue is that the slave BE does not have a
serial port on it. However my master BE sits right next to the slave and it
does have a serial port. I have LIRC working on the master and blasting
correctly using /dev/lircd.

Being a linux newbie I am probly asking a basic question, but with the
PVR-250 in my slave BE is there a way to have my slave BE use the serial
port on my master BE to blast to control the DishNetwork box?

Again being a newbie I tried NFS just for fun and when I tried to mount
/dev/lircd on the slave it it failed, but I didn't expect it to work (exact
error was "mount: failed, reason given by server:
Not a directory")

I have a USB to Serial dongle that I could use, but from what I have read,
that wouldn't work with the blaster I have and with LIRC. (or am I wrong?)

I guess the last resort would be to put the HD-3000 in the slave BE and the
PVR-250 in the master, but with an hour of HD using 8gig, I figure it would
be best to leave it in the master so the slave doesn't have to try to push
that large amount of data over the network to store it on the master.

Any suggestions?

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