I also can confirm this bug on 14.04 First time notices on Ubuntu 8.04.2. Take a look here:
https://bugs.launchpad.net/ubuntu/+source/mdadm/+bug/324997
and here:
http://feeding.cloud.geek.nz/posts/the-perils-of-raid-and-full-disk-encryption-on-ubuntu/
I also can confirm this bug on 14.04 First time notices on Ubuntu 8.04.2. Take a look here:
https:/ /bugs.launchpad .net/ubuntu/ +source/ mdadm/+ bug/324997
and here:
http:// feeding. cloud.geek. nz/posts/ the-perils- of-raid- and-full- disk-encryption -on-ubuntu/