I found that after I'd fixed this the initramfs failed to load md modules reliably before trying to bring up the array. I'm creating a bug task for this, and will have a look after I've uploaded the grub2 fix (at which point it will be easier to debug this sort of thing).
** Also affects: mdadm (Ubuntu) Importance: Undecided Status: New -- grub-installer fails to install on a raid1 array https://bugs.launchpad.net/bugs/527401 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