Comment 13 for bug 480739

It was a little disconcerting. Perhaps it was not kernel-upgrade related. I preferred to report it as precautionary measure.

Checking the dpkg logs I have found a couple of previous upgrades. Could the package "devicekit-disks" break my lvm partition?

Preparing to replace devicekit-disks 007-2ubuntu5 (using .../devicekit-disks_007-2ubuntu6_amd64.deb) ...
Unpacking replacement devicekit-disks ...
Processing triggers for man-db ...
Setting up devicekit-disks (007-2ubuntu6) ...
Log ended: 2010-04-01 22:43:44

The installation logs of kernel package:

Log started: 2010-04-01 22:47:22
Selecting previously deselected package linux-image-2.6.31-21-generic.
Unpacking linux-image-2.6.31-21-generic (from .../linux-image-2.6.31-21-generic_2.6.31-21.59_amd64.deb) ...
Done.
Selecting previously deselected package linux-headers-2.6.31-21.
Unpacking linux-headers-2.6.31-21 (from .../linux-headers-2.6.31-21_2.6.31-21.59_all.deb) ...
Selecting previously deselected package linux-headers-2.6.31-21-generic.
Unpacking linux-headers-2.6.31-21-generic (from .../linux-headers-2.6.31-21-generic_2.6.31-21.59_amd64.deb) ...
Setting up linux-image-2.6.31-21-generic (2.6.31-21.59) ...
Running depmod.
update-initramfs: Generating /boot/initrd.img-2.6.31-21-generic
Running postinst hook script /sbin/update-grub.
Searching for GRUB installation directory ... found: /boot/grub
Searching for default file ... found: /boot/grub/default
Testing for an existing GRUB menu.lst file ... found: /boot/grub/menu.lst
Searching for splash image ... none found, skipping ...
Found kernel: /boot/vmlinuz-2.6.31-21-generic
Found kernel: /boot/vmlinuz-2.6.31-20-generic
Found kernel: /boot/vmlinuz-2.6.31-19-generic
Found kernel: /boot/vmlinuz-2.6.31-17-generic
Found kernel: /boot/vmlinuz-2.6.28-17-generic
Found kernel: /boot/memtest86+.bin
Replacing config file /var/run/grub/menu.lst with new version
Updating /boot/grub/menu.lst ... done

Examining /etc/kernel/postinst.d.
run-parts: executing /etc/kernel/postinst.d/dkms
 * Running DKMS auto installation service for kernel 2.6.31-21-generic ESC[158G
 * nvidia (185.18.36)... ESC[158G nvidia (185.18.36): Installing module.
............
......
^MESC[152G[ OK ]
run-parts: executing /etc/kernel/postinst.d/nvidia-common

Setting up linux-headers-2.6.31-21 (2.6.31-21.59) ...
Setting up linux-headers-2.6.31-21-generic (2.6.31-21.59) ...
Examining /etc/kernel/header_postinst.d.
run-parts: executing /etc/kernel/header_postinst.d/dkms
 * Running DKMS auto installation service for kernel 2.6.31-21-generic ESC[158G
 * nvidia (185.18.36)... ESC[158G nvidia (185.18.36): Already installed on this kernel.
^MESC[152G[ OK ]
run-parts: executing /etc/kernel/header_postinst.d/nvidia-common

Log ended: 2010-04-01 22:48:36

There wasn't a failed boot, just a failed mount point. The /dev/mapper/vg0-lv0 simply didn't exist. Disconcerting.

Thanks.