here's the thread I refer to above http://ubuntuforums.org/showthread.php?t=1207071 following the advice on that thread seems to work.
#cd /etc/mdadm #mdadm --examine --scan --config=mdadm.conf >> mdadm.conf -- md mirror disappears after reboot https://bugs.launchpad.net/bugs/538526 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs