[Bug 672177] Re: libc6 upgrade causes umount to fail on shutdown because init cannot be restarted

[ingo]

Thanks for Lucid-fix. I did immediately test with new 'libc6' and
'upstart' from Lucid-proposed:

1. just new 'libc6' -> does not change anything (8 orphaned inodes after
reboot).

2. + new 'upstart' -> gives 1 orphaned inode after reboot.

3. new ('libc6' + 'upstart'), 'apt-get install --reinstall libc6 &&
shutdown -r now' -> 4 orphaned inodes.

So it improves the situation definitely, but does not solve it
completely. Did I miss something to update?

--------------
$  dpkg --status libc6
Package: libc6
Status: install ok installed
Priority: required
Section: libs
Installed-Size: 10212
Maintainer: Ubuntu Core developers <ubuntu-devel-discuss at lists.ubuntu.com>
Architecture: amd64
Source: eglibc
Version: 2.11.1-0ubuntu7.8
Replaces: belocs-locales-bin
Provides: glibc-2.10-1
Depends: libc-bin (= 2.11.1-0ubuntu7.8), debconf (>= 0.5) | debconf-2.0, libgcc1, tzdata, findutils (>= 4.4.0-2ubuntu2)
Suggests: glibc-doc, locales
Breaks: nscd (<< 2.9)
Conflicts: belocs-locales-bin, tzdata (<< 2007k-1), tzdata-etch
....

---------------
$ dpkg --status upstart
Package: upstart
Status: install ok installed
Priority: required
Section: admin
Installed-Size: 860
Maintainer: Scott James Remnant <scott at ubuntu.com>
Architecture: amd64
Version: 0.6.5-8
Replaces: startup-tasks, system-services, sysvinit, upstart-compat-sysv, upstart-job
Provides: startup-tasks, system-services, upstart-compat-sysv, upstart-job
Depends: libc6 (>= 2.4), libdbus-1-3 (>= 1.2.16), libnih-dbus1 (>= 1.0.0), libnih1 (>= 1.0.0), libudev0 (>= 151-5), sysvinit-utils, sysv-rc, initscripts, mountall, ifupdown (>= 0.6.8ubuntu29)
Breaks: libc6 (<< 2.11.1-0ubuntu7.8)
Conflicts: startup-tasks, system-services, sysvinit, upstart-compat-sysv, upstart-job
Conffiles: ....

---------
$ apt-get install --reinstall libc6 && shutdown -r now

->
$ dmesg | grep orphan
[    2.898032] EXT3-fs: sda1: orphan cleanup on readonly fs
[    2.898051] ext3_orphan_cleanup: deleting unreferenced inode 185613
[    2.902163] ext3_orphan_cleanup: deleting unreferenced inode 185601
[    2.902430] ext3_orphan_cleanup: deleting unreferenced inode 185574
[    2.903374] ext3_orphan_cleanup: deleting unreferenced inode 185553
[    2.903771] EXT3-fs: sda1: 4 orphan inodes deleted

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https://bugs.launchpad.net/bugs/672177

Title:
  libc6 upgrade causes umount to fail on shutdown because init cannot be
  restarted