Boyd, do you have an entry for all of your arrays in /etc/mdadm/mdadm.conf?
It should look like the output of: sudo mdadm -Es -- mdadm cannot assemble array as cannot open drive with O_EXCL https://bugs.launchpad.net/bugs/27037 You received this bug notification because you are a member of Ubuntu Bugs, which is a direct subscriber. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs