I have exactly the same problem.
Everything stopped, dhclient, network manager and plymouthd as well, no redundant open files, everything what should be umounted is umounted.
But every reboot I still see "umount: / is busy" and then fsck at start.
I have exactly the same problem.
Everything stopped, dhclient, network manager and plymouthd as well, no redundant open files, everything what should be umounted is umounted.
But every reboot I still see "umount: / is busy" and then fsck at start.