Looks to me like there are two separate problems. The first may be a regression of Bug #672177 for which a fix was supposedly released ca April 2011. Upgrading or re-installing libc6 results in orphaned inodes:
$ sudo apt-get install --reinstall libc6 && sudo shudown -r now I put '/usr/sbin/lsof -n > /saved.root.lsof' in /etc/init.d/umountroot just before the root filesystem is remounted read-only. The result shows open files of type 'DEL' for several libc .so files. These are probably the files assocated with the orphaned inodes. fsck must be smart enough to know that the files were deleted so it doesn't put anything into /lost+found. The second problem is the "mount: / is busy" console message on every reboot. The /saved.root.lsof file shows that dhclient is still holding a dhcp lease file open for write when umountroot is invoked. Doing 'sudo killall dhclient' before the reboot eliminates the message. I couldn't find an already opened bug report for this; if someone else could have a try I'd appreciate it. Both of these problems are probably benign, but before I trust my data to 12.04, I'd certainly like to hear someone smarter than me say so. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/952315 Title: root filesystem not cleanly unmounted on reboot To manage notifications about this bug go to: https://bugs.launchpad.net/upstart/+bug/952315/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs