I've finally solved this in my case: After detecting the second disk, udev triggers a mdadm --assemble --scan as it should. This failed to pick up the new disk. Removing num-devices=, level= and uuid= settings from /etc/mdadm/mdadm.conf resolved this problem. My /etc/mdadm/mdadm.conf now reads:
DEVICE /dev/hda1 /dev/hda2 /dev/sda2 /dev/sda3 ARRAY /dev/md0 devices=/dev/hda1,/dev/sda2 ARRAY /dev/md1 devices=/dev/hda2,/dev/sda3 A dpkg-reconfigure mdadm later the problem was gone. Together with the evms removal this is probably worth it to be put into an upgrade guide. -- boot-time race condition initializing md https://bugs.launchpad.net/bugs/103177 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs