LXCs show failed systemd service: sys-kernel-config.mount: Why

[norbertk]

Hello all,
I run PVE 7.4-3 and use LXC containers.

All containers show the systemd-service sys-kernel-config.mount as failed. They show no problems in practice, so I wonder if I should just diable this service.
Any thoughts ?

norbert@media-server:~$ sudo systemctl
  UNIT                                             LOAD   ACTIVE SUB       DESCRIPTION
 ....
* sys-kernel-config.mount                          loaded failed failed    Kernel Configuration File System
....

norbert@media-server:~$ sudo journalctl -u sys-kernel-config.mount
-- Journal begins at Sat 2023-05-27 06:37:12 UTC, ends at Thu 2023-10-05 10:13:53 UTC. --
Oct 05 10:07:59 media-server mount[54]: mount: /sys/kernel/config: permission denied.

Thanks a lot

Norbert

 

[lva]

I ran into this problem a while ago and was able to fix it by adding lxc.cap.drop: sys_rawio to the config. (Source)

Edit: I also found this Blog post covering some aspects and explaining how to fix errors like this.