[mythtv-users] backend won't record - MYTH_PROTO_VERSION problems

Mark Knecht markknecht at gmail.com
Fri Dec 2 19:04:58 EST 2005


On 12/2/05, Michael T. Dean <mtdean at thirdcontact.com> wrote:
> Mark Knecht wrote:
> >
> >   While I cannot yet be 100% sure this is the problem, it's certainly
> >badly configured and needs to be fixed.
> >
> >
> True that it needs fixed, but it wouldn't cause a protocol version
> mismatch--only differing versions of mythbackend and client (like
> mythfrontend or MythWeb) would do that.
>
> Mike

As you suspected it did not fix the problem. Here are the symptoms as
best I can see them from 350 miles away:

1) We can set up new recording in MythTV. All of the programmign setup
appears to go OK.

2) When it comes time for the recording to start a file is created but
it ends up with a size of 0 bytes. I tried a test recording at 10:30AM
this morning.

gandalf ~ # ls -la /TVstorage/
total 63771544
drwxr-xr-x   2 root root       4096 Dec  2 10:30 .
drwxr-xr-x  20 root root       4096 May 24  2005 ..
-rw-r--r--   1 root root          0 Dec  2 10:30
1004_20051202103000_20051202110000.nuv
-rw-r--r--   1 root root 2330060800 Jun  4 00:30
1028_20050603233000_20050604003000.nuv
-rw-r--r--   1 root root 2327177216 Jun 10 00:30
1028_20050609233000_20050610003000.nuv
<SNIP>
-rw-r--r--   1 root root 2330853376 Nov 15 00:30
1028_20051114233000_20051115003000.nuv
-rw-r--r--   1 root root          0 Dec  2 10:00 nfslockfile.lock
gandalf ~ #

3) There are no messages in dmesg and very little in
/var/log/mythtv/mythbackend.log:

Starting up as the master server.
2005-12-02 10:00:06.958 New DB connection, total: 2
2005-12-02 10:00:07.614 New DB connection, total: 3
2005-12-02 10:00:07.929 New DB scheduler connection
2005-12-02 10:00:07.934 mythbackend version: 0.18.1.20050510-1 www.mythtv.org
2005-12-02 10:00:07.936 Enabled verbose msgs :important
2005-12-02 10:00:10.150 Recording starts soon, AUTO-Startup assumed
2005-12-02 10:00:17.943 New DB connection, total: 4
2005-12-02 10:00:17.945 New DB connection, total: 5
2005-12-02 10:06:03.690 adding: gandalf as a client (events: 0)
2005-12-02 10:06:03.733 adding: gandalf as a client (events: 1)
2005-12-02 10:08:41.216 adding: gandalf as a client (events: 0)
2005-12-02 10:08:41.260 adding: gandalf as a client (events: 1)

Note that the recording should have started at 10:30AM and no messages
were written to this file after 10:08AM. Weird...

4) There are no messages in any of the /var/log/mysql/mysql.* files at 10:30AM.

5) Sometimes the mythbackend log file fills up a message

waiting for a thread......

I can get 50,000 lines of this message.

6) The message about MYTH_PROTO_VERSION seems to only come after the
machine tried to record overnight.

7) The frontend and back end seem to be the same version:

2005-12-02 10:00:07.934 mythbackend version: 0.18.1.20050510-1 www.mythtv.org

2005-12-02 16:03:22.185 mythfrontend version: 0.18.1.20050510-1 www.mythtv.org

   I have completely rebuilt MythTV from source today. It did not fix
the problems.

   I am terribly, terribly stumped and the PAF (parent acceptance
factor) is falling to zero. Heck, I'll be luck to get a Christmas
present if this goes on much longer! ;-)

Thanks,
Mark


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