This problem was actually composed of two independent bugs. The first one was related to grub: here are the details and the solution: http://ubuntuforums.org/showthread.php?t=2201239.
Another bug was in the Ubuntu installer incorrectly informing initramfs- tools about the necessary drivers to load (the USB keyboard driver was not loaded at the LUKS passphrase stage); here are the details and the solution: http://ubuntuforums.org/showthread.php?t=2201983. With these 2 bugs fixed we could correctly boot the server. Nevertheless, we found another problem when we tried to test the RAID for automatic recovery from a single disk failure: we powered off the server, removed one disk and booted it again. The mdadm could not correctly activate the degraded arrays in spite of the bootdegraded options in mdadm config for initramfs and the kernel param, and the cryptosetup stuck for 180s waiting for the root device, then dropped to the initramfs prompt. We finally solved it as well and later found that there are a number of open bug reports (one from 2008!!) for this issue. Here are the details: https://bugs.launchpad.net/ubuntu/+s...up/+bug/251164. For the solution, check the comment #30. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1272604 Title: Ubuntu install fails to correctly configure GRUB with RAID + LUKS in UEFI mode To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub-installer/+bug/1272604/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
