[mythtv-users] Fixes 30 Comms lost between front and back ends

[Stephen Worthington]

On Sun, 26 May 2019 12:00:17 +0100, you wrote:

>Have been using fixes 30 since release on Ubuntu 18.10 then 19.04 
>without any reliability issues.
>
>However since updating from
>
>18/03/19 MythTV Version : v30.0-28-g60cfb7c05aa
>
>to
>
>14/05/19 MythTV Version : v30.0-51-ga32ec4bdea
>
>I have had two occurrences of the backend dropping the self hosted 
>frontend and refusing to reconnect to any other.
>
>Recordings continue.
>
>Looking at the change history there are no obvious  candidates and a 
>bisect will probably take a month as the fault rate is low.
>
>Anybody else seeing similar issues?
>
>Frontend log
>May 24 20:28:31 tv mythfrontend: mythfrontend[5171]: E 
>MythSocketThread(-1) mythsocket.cpp:826 (ReadStringListReal) 
>MythSocket(7fdb8c010c30:65): ReadStringList: Error, timed out after 
>30000 ms.
>May 24 20:28:31 tv mythfrontend: mythfrontend[5171]: E SendMessage 
>mythsocket.cpp:368 (SendReceiveStringList) MythSocket(7fdb8c010c30:-1): 
>*No response*.
>May 24 20:28:31 tv mythfrontend: mythfrontend[5171]: N SendMessage 
>mythcorecontext.cpp:1381 (SendReceiveStringList) 
>MythCoreContext::SendReceiveStringList(): Connection to backend server lost
>
>Backend Log
>May 24 20:27:58 tv mythbackend: mythbackend[1330]: I ProcessRequest 
>mainserver.cpp:1780 (HandleAnnounce) MainServer: MainServer::ANN Playback
>May 24 20:27:58 tv mythbackend: mythbackend[1330]: I ProcessRequest 
>mainserver.cpp:1785 (HandleAnnounce) MainServer: adding: 
>tv(55f3495ccb50) as a client (events: 0)
>May 24 20:27:58 tv mythbackend: mythbackend[1330]: I ProcessRequest 
>mainserver.cpp:1780 (HandleAnnounce) MainServer: MainServer::ANN Monitor
>May 24 20:27:58 tv mythbackend: mythbackend[1330]: I ProcessRequest 
>mainserver.cpp:1785 (HandleAnnounce) MainServer: adding: 
>tv(55f34963bfc0) as a client (events: 1)
>May 24 20:28:00 tv mythbackend: mythbackend[1330]: N ProcessRequest 
>recordinginfo.cpp:651 (ApplyRecordRecGroupChange) 
>ApplyRecordRecGroupChange: Default to Deleted (3)
>May 24 20:28:00 tv mythbackend: mythbackend[1330]: I Scheduler 
>scheduler.cpp:2356 (HandleReschedule) Reschedule requested for CHECK 0 
>6114 0 DoHandleDelete1 | Jamie's Quick & Easy Food |  | Jamie Oliver 
>cooks up smoky pancetta cod, Asian fried eggs, crispy garlicky chicken, 
>and a mango rice pudding. Crazy-delicious recipes so quick and easy it's 
>almost outrageous. (S3 Ep2/6) | www.channel4.com/68137/002
>May 24 20:28:00 tv mythbackend: mythbackend[1330]: I Scheduler 
>scheduler.cpp:2472 (HandleReschedule) Scheduled 80 items in 0.1 = 0.00 
>match + 0.00 check + 0.06 place
>May 24 20:28:00 tv mythbackend: mythbackend[1330]: I 
>MythSocketThread(93) mainserver.cpp:7928 (connectionClosed) Playback 
>sock(55f3495ccb50) 'tv' disconnected
>
>--reboot

To try and diagnose this problem, you might like to run this command
while things are working:

sudo netstat -ap | grep myth

and then do it again and compare the results when communications fail
again.