[Bug 1375910] Re: package libvirt-bin 1.2.8-0ubuntu6 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1

[Serge Hallyn]

** Also affects: libvirt (Ubuntu Precise)
   Importance: Undecided
       Status: New

** Also affects: libvirt (Ubuntu Trusty)
   Importance: Undecided
       Status: New

** Changed in: libvirt (Ubuntu Precise)
   Importance: Undecided => High

** Changed in: libvirt (Ubuntu Trusty)
   Importance: Undecided => High

** Description changed:

+ ======================================================
+ Impact: libvirt package upgrade can fail if user deletes /etc/libvirt/qemu.conf
+ Test case:
+ 	sudo apt-get install libvirt-bin
+ 	sudo rm /etc/libvirt/qemu.conf
+ 	sudo apt-get install --reinstall libvirt-bin
+ Regresion potential: none, we only check that the file is present before trying to chown+chmod it.
+ ======================================================
+ 
  I ran sudo apt-get update && sudo apt-get upgrade
  After that, the differents programs installed ans updated but libvirt-bin can't be configure by dpkg cause /etc/libvirt/qemu.conf don't exist.
  
  ProblemType: Package
  DistroRelease: Ubuntu 14.10
  Package: libvirt-bin 1.2.8-0ubuntu6
  ProcVersionSignature: Ubuntu 3.16.0-18.25-generic 3.16.3
  Uname: Linux 3.16.0-18-generic x86_64
  ApportVersion: 2.14.7-0ubuntu2
  Architecture: amd64
  Date: Tue Sep 30 12:11:16 2014
  DuplicateSignature: package:libvirt-bin:1.2.8-0ubuntu6:subprocess installed post-installation script returned error exit status 1
  ErrorMessage: subprocess installed post-installation script returned error exit status 1
  InstallationDate: Installed on 2014-09-28 (2 days ago)
  InstallationMedia: Ubuntu 14.10 "Utopic Unicorn" - Alpha amd64 (20140923)
  ProcCmdline: BOOT_IMAGE=/vmlinuz-3.16.0-18-generic.efi.signed root=/dev/mapper/ubuntu--vg-root ro quiet splash vt.handoff=7
  SourcePackage: libvirt
  Title: package libvirt-bin 1.2.8-0ubuntu6 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1
  UpgradeStatus: No upgrade log present (probably fresh install)
  modified.conffile..etc.libvirt.qemu.conf: [modified]
  mtime.conffile..etc.libvirt.qemu.conf: 2014-09-30T12:11:54.303971

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https://bugs.launchpad.net/bugs/1375910

Title:
  package libvirt-bin 1.2.8-0ubuntu6 failed to install/upgrade:
  subprocess installed post-installation script returned error exit
  status 1

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