Boot device mapped to new name after upgrade to 11.04

Bug #764512 reported by Rune Nordbøe Skillingstad on 2011-04-18
This bug affects 1 person
Affects Status Importance Assigned to Milestone
grub (Ubuntu)

Bug Description

Tried a release upgrade to 11.04 yesterday (remote) and the machine never came up after reboot. It could not find the root device.

I got an error message from udevd: inotify_add_watch(6, /dev/dm-1, 10) failed: no such file or directory

But all the open bugs seemed not to fit on my situation.

The grub cmdline had root/dev/mapper/isw_fdadjaege_Volume01 and that device were missing. Instead I found isw_fdadjaege_Volume0p1 and quickly guessed that the missing device no were renamed.

Changed device name in menu.lst, and now my system boot again.

This is the only system I have using device mapper on root, so I'm not able to reproduce. The system were installed as 10.04 and release upgraded to 10.10.

Some info about the system:
$ uname -a
Linux mose 2.6.38-8-generic #42-Ubuntu SMP Mon Apr 11 03:31:24 UTC 2011 x86_64 x86_64 x86_64 GNU/Linux

$ lspci | grep RAID
00:1f.2 RAID bus controller: Intel Corporation 82801 SATA RAID Controller (rev 02)

$ grep '^# kopt=root' /boot/grub/menu.lst
# kopt=root=/dev/mapper/isw_fdadjaege_Volume0p1 ro xforcevesa

affects: ubuntu → grub (Ubuntu)
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