Public bug reported:

Binary package hint: debian-installer

This is probably similar or duplicate of bug #577239
https://bugs.launchpad.net/ubuntu/+source/cryptsetup/+bug/577239

I'm testing Ubuntu 10.10 Server under VirtualBox following this test case:
http://testcases.qa.ubuntu.com/Install/ServerRAID1

Installation, reboot and upgrade go ok, but when testing boot with
degraded array, grub fails with:

"-r ALERT! /dev/disk/by-uuid/[....] does not exist. Dropping to a shell"

dropping to initramfs busybox prompt.

To reproduce this bug, create a virtual machine for ubuntu guest with
two 10Gb sata disks.

Boot with 10.10 server i386 iso image
Partiion as follows:

2 500mb partitions(one for each disk) used as physical volumes for raid1, 
device md0
2 partitions using all the remaining space (one for each disk) used as physical 
volumes for raid1, device md1

md0 mounted as /boot formatted with ext2
md1 as physical volume for encryption
md1_crypt as physical volume for LVM

3 LVM volume groups for /, /home and swap

complete the installation with defaults, install grub on MBR of both disks, and 
reboot.
System boots correctly.
Apt-get update && upgrade, reboot, system boots correctly.
Poweroff. Remove one of the two virtual disks from the VM, doesnt matter which 
one, reboot, fails with the message above.
Poweroff. Re-add the disk to the VM, poweron. System boots normally.

debian-installer version: 20100211ubuntu29
mdadm version: 2.6.7.1-1ubuntu16
cryptsetup version: 2:1.1.2-1ubuntu1

** Affects: debian-installer (Ubuntu)
     Importance: Undecided
         Status: New

-- 
Degraded boot fails when using encrypted raid1 with lvm
https://bugs.launchpad.net/bugs/659899
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