package lxc 0.7.5-3ubuntu60 failed to install/upgrade: unable to install new version of `/usr/lib/lxc/liblxc.so.0.7.5': Device or resource busy

[James Chapman]

Had been using lxc on a laptop. Nothing unusual - basic LXC experiments, created and removed several containers. Suspended and resumed the laptop at least 5 times between last using lxc and the lxc upgrade.

Perhaps one or more containers is still active?

ProblemType: Package
DistroRelease: Ubuntu 12.04
Package: lxc 0.7.5-3ubuntu60
ProcVersionSignature: Ubuntu 3.2.0-26.41-generic 3.2.19
Uname: Linux 3.2.0-26-generic i686
ApportVersion: 2.0.1-0ubuntu11
Architecture: i386
Date: Mon Aug 6 07:36:58 2012
DuplicateSignature:
 Unpacking replacement lxc ...
 dpkg: error processing /var/cache/apt/archives/lxc_0.7.5-3ubuntu62_i386.deb (--unpack):
  unable to install new version of `/usr/lib/lxc/liblxc.so.0.7.5': Device or resource busy
ErrorMessage: unable to install new version of `/usr/lib/lxc/liblxc.so.0.7.5': Device or resource busy
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release i386 (20110427)
KernLog:

ProcCmdline: BOOT_IMAGE=/boot/vmlinuz-3.2.0-26-generic root=UUID=c79e173c-905b-40a0-b2d3-c31b8581027d ro quiet splash vt.handoff=7
SourcePackage: lxc
Title: package lxc 0.7.5-3ubuntu60 failed to install/upgrade: unable to install new version of `/usr/lib/lxc/liblxc.so.0.7.5': Device or resource busy
UpgradeStatus: Upgraded to precise on 2012-07-15 (21 days ago)
lxcsyslog:

[Stéphane Graber (stgraber)]

Moving the bug to dpkg as lxc isn't doing anything weird that'd explain this.
Replacing a file currently in use is perfectly possible on Linux and shouldn't cause that error.

[Adam Conrad (adconrad)]

07:27 < infinity> stgraber: That's not a dpkg bug, can I bounce it back? :P
07:28 < infinity> stgraber: dpkg is trying to write to the file and failing, it's not up to dpkg to
                  ensure the world is writable.
07:28 < infinity> stgraber: I'd assume this is either lxc userspace being wonky, or some strange
                  kernel issue, perhaps relating to repeated suspends with active containers?

[Stéphane Graber (stgraber)]

Please attach:
 - ls -l /usr/lib/lxc/liblxc.so.0.7.5
 - sudo lsof -n

[Launchpad Janitor (janitor)]

[Expired for lxc (Ubuntu) because there has been no activity for 60 days.]