Public bug reported:

I have done yesterday the update (with the Gnome update manager) from
ubuntu 8.10 to 9.04, and now I can no longer boot my computer. The
update seems to have worked properly but gaved a lot of small errors (to
which I did not pay attention at the time), including missing modules in
X server and the fact that it was unable to connect to some
configuration server. But these things are not related I think to a
early boot problem.

At the grub prompt I only have two different kernels : 2.6.28-11-generic
and 2.6.27-11-generic. And the same happen for both of them. After some
seconds of boot I get the following message :

-------------------------
Gave up waiting for root device.  Common problem:
 - Boot arg (cat /proc/cmdline)
   - Check rootdelay= (did the system wait long enough ?)
   - Check root= (did the system wait for the right device?)
 - Missing modules (cat /proc/modules; ls /dev)
ALERT! /dev/md0 does not exists. Dropping to a shell!
-------------------------

>From there, if I enter "exit" I get the same message again, even if I
wait for a long time (several minutes) or if I use rootdelay=90 in the
boot command line (as suggested here
http://www.ubuntu.com/getubuntu/releasenotes/904#Boot%20failures%20on%20systems%20with%20Intel%20D945%20motherboards
).

In the busybox shell I can enter the following commands (I copy manually
the output as I can't do anything else on this faulty computer) :

-------- cat /proc/modules
r8169
mii
floppy
raid10
raid456
async_xor
async_memcpy
async_tx
raid1
raid0
multipath
linear
vesafb
fbcon
tileblit
font
bitblit
softcursors
--------------------------

------------- uname -a
Linux (none) 2.6.28-11-generic #42-Ubuntu SMP Fri Apr 17 01:58:03 UTC 2009 
x86_64 unknown
--------------------------

If a look into /dev, I can see all of my hard drive and partition except
for /dev/md0 which is the root device.

Booting with 2.6.27-11-generic yields the same result but after a longer
boot, during which I can see that all my hard drive are also properly
recognised.

My hardware is an ASUS P5B motherboard with an Intel P965 chipset, SATA
hard drives on an Intel ICH8 controller and UDMA optical drives on a
JMicron JMB363 PATA controller.

My root device is /dev/md0 which is a software raid1 array (with two
devices /dev/sda2 and /dev/sdb2).

This may be the same than bug #335619 whick lacks a lot of information,
but I think that it is not bug #290153 (or any other bug corrected by
waiting at the busybox shell before proceeding with the boot) as adding
rootdelay=90 (or a greater value) does not solve my problem. It is
neither bug #33269 as the error is different.

Tell me if I can give more information, but I can't boot that computer
so every thing will have to be copied by hand.

** Affects: ubuntu
     Importance: Undecided
         Status: New

-- 
boot failure with raid1 array on jaunty
https://bugs.launchpad.net/bugs/367934
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