[mythtv-users] today's mythtv update for v31 failed

[Bill Meek]

On 2/3/22 11:05, James Abernathy wrote:
> 
> 
> On Thu, Feb 3, 2022 at 11:56 AM Mike Perkins <mikep at randomtraveller.org.uk <mailto:mikep at randomtraveller.org.uk>> wrote:
> 
>     On 03/02/2022 16:47, James Abernathy wrote:
>     > I think this failure is mine alone but it seems to fail because of an
>     > override.conf file I have in the mythtv-backend.service.  It worked until
>     > this update this morning.
>     >
>     > I don't see this reason for the error:
>     > jim at kubuntu-closet:/etc/systemd/system/mythtv-backend.service.d$ sudo
>     > systemctl cat mythtv-backend.service
>     > # /lib/systemd/system/mythtv-backend.service
>     > [Unit]
>     > Description=MythTV Backend
>     > Documentation=https://www.mythtv.org/wiki/Mythbackend <https://www.mythtv.org/wiki/Mythbackend>
>     > After=mysql.service network.target
>     >
>     > [Service]
>     > User=mythtv
>     > EnvironmentFile=-/etc/mythtv/additional.args
>     > ExecStart=/usr/bin/mythbackend --quiet --syslog local7 $ADDITIONAL_ARGS
>     > StartLimitBurst=10
>     > StartLimitInterval=10m
>     > Restart=on-failure
>     > RestartSec=1
>     >
>     > [Install]
>     > WantedBy=multi-user.target
>     >
>     > # /etc/systemd/system/mythtv-backend.service.d/override.conf
>     > [Service]
>     > ExecStartPre=/usr/local/bin/hdhomerun_check.py
>     >
>     > I think the error with the upgrade is during the post processing. when it
>     > tried to restart mythtv-backend.service. Here's the output from the restart
>     > failure.
>     >
>     > jim at kubuntu-closet:/etc/systemd/system/mythtv-backend.service.d$ sudo
>     > systemctl status mythtv-backend
>     > × mythtv-backend.service - MythTV Backend
>     >       Loaded: loaded (/lib/systemd/system/mythtv-backend.service; enabled;
>     > vendor preset: enabled)
>     >      Drop-In: /etc/systemd/system/mythtv-backend.service.d
>     >               └─override.conf
>     >       Active: failed (Result: exit-code) since Thu 2022-02-03 11:39:01 EST;
>     > 14s ago
>     >         Docs: https://www.mythtv.org/wiki/Mythbackend <https://www.mythtv.org/wiki/Mythbackend>
>     >      Process: 3711 ExecStartPre=/usr/local/bin/hdhomerun_check.py
>     > (code=exited, status=1/FAILURE)
>     >          CPU: 86ms
>     >
>     > Feb 03 11:39:01 kubuntu-closet systemd[1]: mythtv-backend.service:
>     > Scheduled restart job, restart counter is at 10.
>     > Feb 03 11:39:01 kubuntu-closet systemd[1]: Stopped MythTV Backend.
>     > Feb 03 11:39:01 kubuntu-closet systemd[1]: mythtv-backend.service: Start
>     > request repeated too quickly.
>     > Feb 03 11:39:01 kubuntu-closet systemd[1]: mythtv-backend.service: Failed
>     > with result 'exit-code'.
>     > Feb 03 11:39:01 kubuntu-closet systemd[1]: Failed to start MythTV Backend.
>     >
>     > I'll temporarily remove the override for now.
>     >
>     > Any ideas?
>     >
>     It's the hdhomerun python code that is failing. Has the version changed?
> 
>     -- 
> 
>     Mike Perkins
> 
> 
> I have not changed the code. I got it from someone on MythTV Forum and it seemed simpler than wait-for-pingable method of delaying
> mythtv-backend startup.
> Here's the code and it works normally at the command line.
> 
>  cat /usr/local/bin/hdhomerun_check.py
> #!/usr/bin/python3
> 
> ''' See if the HD Homerun box is accessable and running '''
> 
> import subprocess
> import sys
> import logging
> from time import sleep
> from datetime import datetime
> 
> ATTEMPTS = 21
> DELAY = 2
> 
> 
> def get_elapsed_time(start):
>     ''' Calculate the time spent waiting for the HDHR to come up '''
> 
>     delta = datetime.utcnow() - start
>     rounded_delta = '{:.3f}'.format(delta.seconds +
>                                     (delta.microseconds / 1000000))
>     return rounded_delta
> 
> 
> def main():
>     ''' Try to discover the HDHR '''
> 
>     attempt = 0  # Shut up pylint.
>     command = 'hdhomerun_config discover'
>     logger = logging.getLogger(command)
> 
>     logging.basicConfig(filename='/var/log/mythtv/hdhr_discovery.log',
>                         filemode='a',
>                         format='%(asctime)s %(levelname)s\t%(message)s',
>                         datefmt='%Y-%m-%d %H:%M:%S',
>                         level=logging.INFO)
> 
>     logger.info <http://logger.info>('Starting HD Homerun discovery')
> 
>     start = datetime.utcnow()
> 
>     for attempt in range(1, ATTEMPTS):
>         try:
>             sproc = subprocess.Popen(command, stdout=subprocess.PIPE,
>                                      shell=True)
>             sproc.communicate()
> 
>         except KeyboardInterrupt:
>             sys.exit(2)
> 
>         if sproc.returncode != 0:
>             logger.warning('%s failed, return code = %d.', command,
>                            sproc.returncode)
>             sleep(DELAY)
>         else:
>             logger.info <http://logger.info>('Found HD Homerun. Seconds=%s, attempts=%d.',
>                         get_elapsed_time(start), attempt)
>             sys.exit(0)
> 
>     logger.error('Couldn\'t find HD Homerun. Seconds=%s, attempts=%d.',
>                  get_elapsed_time(start), attempt)
> 
> 
> if __name__ == '__main__':
>     main()
> 
> # vim: set expandtab tabstop=4 shiftwidth=4 smartindent colorcolumn=80:
>  
> Jim A

See what's in /var/log/mythtv/hdhr_discovery.log

Be sure the above is writable by user mythtv. My own user is a
member of group mythtv and the file looks like this:

  -rw-rw-r-- 1 mythtv mythtv 5735 Feb  3 11:28 /var/log/mythtv/hdhr_discovery.log

If that doesn't help, run /usr/local/bin/hdhomerun_check.py from
the command line.

-- 
Bill