This bug was fixed in the package mdadm - 4.1-2ubuntu2
--------------- mdadm (4.1-2ubuntu2) eoan; urgency=medium
* Drop broken and unused init scripts in favor of native systemd units, which can cause failure to reconfigure mdadm package under certain confiment types. LP: #1829325
-- Dimitri John Ledkov <email address hidden> Mon, 20 May 2019 19:57:41 +0100
This bug was fixed in the package mdadm - 4.1-2ubuntu2
---------------
mdadm (4.1-2ubuntu2) eoan; urgency=medium
* Drop broken and unused init scripts in favor of native systemd units,
which can cause failure to reconfigure mdadm package under certain
confiment types. LP: #1829325
-- Dimitri John Ledkov <email address hidden> Mon, 20 May 2019 19:57:41 +0100