I had exactly the same problem. Changing "ProtectHome=true" to "ProtectHome=false" in the Unit-File fixed it for me. systemd was trying to unmount /home, which was not possible because of a lot of bind mounts on /home.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1840055 Title: package mariadb-server-10.1 1:10.1.41-0ubuntu0.18.04.1 failed to install/upgrade: installed mariadb-server-10.1 package post- installation script subprocess returned error exit status 127 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/mariadb-10.1/+bug/1840055/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs