Confirmed. My Ubuntu test box consists of all md devices and was unbootable after the upgrade until I used the label trick. For those looking for direction: 1) Boot back up on a usable kernel. Due to the horrible bug with update-initramfs wiping the old initrd images, you may need to boot from CD and copy one of the '.dpkg-bak' versions to be able to boot at all. 2) Relabel your root filesystem. Mine had a label, but it was '/' which cannot be represented in the /dev/disk/by-label directory. "e2label /dev/md0 root" gave it a usable tag 3) Edit /etc/fstab and change the /dev/md0 to LABEL=root 4) Edit /boot/grub/menu.lst and copy and uncomment they kopt line to kopt=LABEL=root ro and also change the stanza(s) for the 2.6.20-* kernel(s) so that the root= specifier points to root=LABEL=root 5) Reboot and you should have a working system again.
-- initramfs scripts kill initial "coldplug" udev processing before devices needed for root filesystem are loaded https://launchpad.net/bugs/89366 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
