It only happens during package installation. Right after the package is already installed, you can "modprobe -r dlm" and "modprobe dlm" again and then the devices are properly translated from existing - from the pkg - udev rules.
(k)rafaeldtinoco@clubionic03:~$ systemctl status dlm ● dlm.service - dlm control daemon Loaded: loaded (/lib/systemd/system/dlm.service; enabled; vendor preset: enabled) Active: active (running) since Fri 2020-03-06 20:25:24 UTC; 1min 24s ago Docs: man:dlm_controld man:dlm.conf man:dlm_stonith Main PID: 1365 (dlm_controld) Tasks: 2 (limit: 2338) CGroup: /system.slice/dlm.service └─1365 /usr/sbin/dlm_controld --foreground Mar 06 20:25:23 clubionic03 systemd[1]: Starting dlm control daemon... Mar 06 20:25:23 clubionic03 dlm_controld[1365]: 67 dlm_controld 4.0.7 started Mar 06 20:25:24 clubionic03 systemd[1]: Started dlm control daemon. (k)rafaeldtinoco@clubionic03:~$ ls -1lah /dev/misc/* lrwxrwxrwx 1 root root 14 Mar 6 20:24 /dev/misc/dlm-control -> ../dlm-control lrwxrwxrwx 1 root root 14 Mar 6 20:24 /dev/misc/dlm-monitor -> ../dlm-monitor lrwxrwxrwx 1 root root 12 Mar 6 20:24 /dev/misc/dlm_plock -> ../dlm_plock -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1866392 Title: [bionic] dlm_controld won't start due to missing device files To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/dlm/+bug/1866392/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs