cronjob and/or rc.local command not running

[stooovie]

Hi, my Jellyfin LXC install requires this command in order for HW encoding/decoding to work:

/bin/chgrp video /dev/dri/renderD128

I tried to add this to /etc/rc.local and cron (as

* * * * * root /bin/chgrp video /dev/dri/renderD128

) but none of these work. In order to get the acceleration running, I have to manually run this as root in the LXC shell on every restart of the LXC or the host.

Why is this? Any clues? Thanks!

 

[LnxBil]

Have you done this in order to get rc.local working?

 

[stooovie]

I have, it doesn't work. Running

systemctl start rc-local

returns this:

Job for rc-local.service failed because the control process exited with error code.
See "systemctl status rc-local.service" and "journalctl -xe" for details.
You have new mail in /var/mail/root

And systemctl status rc-local.service returns this:

* rc-local.service - /etc/rc.local Compatibility
     Loaded: loaded (/lib/systemd/system/rc-local.service; enabled-runtime; vendor preset: enabled)
    Drop-In: /usr/lib/systemd/system/rc-local.service.d
             `-debian.conf
     Active: failed (Result: exit-code) since Tue 2023-05-23 11:32:55 UTC; 42s ago
       Docs: man:systemd-rc-local-generator(8)
    Process: 679 ExecStart=/etc/rc.local start (code=exited, status=203/EXEC)
        CPU: 4ms


May 23 11:32:55 jelly systemd[1]: Starting /etc/rc.local Compatibility...
May 23 11:32:55 jelly systemd[679]: rc-local.service: Failed to execute /etc/rc.local: Exec format error
May 23 11:32:55 jelly systemd[679]: rc-local.service: Failed at step EXEC spawning /etc/rc.local: Exec format >
May 23 11:32:55 jelly systemd[1]: rc-local.service: Control process exited, code=exited, status=203/EXEC
May 23 11:32:55 jelly systemd[1]: rc-local.service: Failed with result 'exit-code'.
May 23 11:32:55 jelly systemd[1]: Failed to start /etc/rc.local Compatibility.

 

[leesteken]

May 23 11:23:03 jelly systemd[553]: rc-local.service: Failed at step EXEC spawning /etc/rc.local: Exec format >

It should start with a line like #!/bin/bash and you probably want it to end with exit 0.

 

[stooovie]

Oh boy, there was an extra empty line at the beginning of the file... Linux should be more resilient to tiny errors like this,

Thanks! Seems to do the job.

 

[ubu]

You could also make a systemd job:

/etc/systemd/system/change-render-group.service:
[Service]
Type=oneshot
RemainAfterExit=yes
ExecStart=/usr/bin/chgrp video /dev/dri/renderD128

[Install]
WantedBy=multi-user.target


systemctl daemon-reload

systemctl enable --now change-render-group.service

 

[stooovie]

thank you guys!