I had the same problem and after searching I found out that this solution (https://bugs.archlinux.org/task/33851#comment106076) worked for me. I just had to rename all `/dev/md/*` devices to `/dev/md*` devices in `/etc/mdadm/mdadm.conf` and run `update-initramfs -u` to update the initramfs.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1335642 Title: mdadm runs into infinite loop and prevents initrd/initramfs phase to finish on boot To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/mdadm/+bug/1335642/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs