I think I've traced it down to a problem with the logic in dmraid- activate
Raid_Name=$(dmraid -i -r -cr /dev/$Node_Name | grep -vi "No RAID disks" | grep -vi "formats discovered") activate_array "$Raid_Name" Here it tries to activate a subset of a raid10. (pdc_ebdeeaiceb-0, pdc_ebdeeaiceb-1) when it probably should try to activate the superset pdc_ebdeeaiceb I solved my problem replacing the line with this Raid_Name=$(dmraid -s -cr) And now it boots! -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1202955 Title: (fakeraid) root device not activated during boot To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-lts-quantal/+bug/1202955/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs