Comment 3 for bug 328892

The problem has just gotten severely worse. I did a apt-get dist-upgrade today, and am no longer able to boot my machine.

At the (first) busybox prompt I type the above commands.

The computer then pauses for a few minutes and then returns with many messages of the form:

"/sys/devices/pci0000:00/0000:00:1c.4/0000:03:00.1/host6/target6:0:0/6:0;);)/block/sdd/sd1 (10437)"

The only thing that changes is the last number. It decreases, but not necessarily by one.

Following is:

"Gave up waiting for root device. Common problems:
  - Boot args (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/mapper/root_vg-root_v does not exist. Dropping to a shell!"

But if I type

mkdir /mnt
mount /dev/mapper/root_vg-root-v /mnt

it succeeds.

Booting from CD can also give me access to the volume. fsck tells me that it's clean.

HELP! I'm dead in the water.