[Bug 878078] Re: do-release-upgrade does not properly lock dpkg database

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https://bugs.launchpad.net/bugs/878078

Title:
  do-release-upgrade does not properly lock dpkg database

Status in “man-db” package in Ubuntu:
  New

Bug description:
  When upgrading the system to 11.10, various processes try to access the dpkg database while upgrade is running. These include unattended-upgrades, apticron and update-manager. It happens from time to time, that these processes will gain a lock on the database, forcing the main upgrade process to abort.
  I would expect either the main upgrade process to wait until the database gets released OR to properly lock it so no other process can access it while the upgrade is running.

  ProblemType: Package
  DistroRelease: Ubuntu 11.04
  Package: man-db 2.5.9-4
  ProcVersionSignature: Ubuntu 2.6.38-11.48-powerpc 2.6.38.8
  Uname: Linux 2.6.38-11-powerpc ppc
  Architecture: powerpc
  Date: Wed Oct 19 11:02:04 2011
  ErrorMessage: ErrorMessage: Unterprozess installiertes post-installation-Skript gab den Fehlerwert 1 zurück
  SourcePackage: man-db
  Title: package man-db 2.5.9-4 failed to install/upgrade: ErrorMessage: Unterprozess installiertes post-installation-Skript gab den Fehlerwert 1 zurück
  UpgradeStatus: Upgraded to natty on 2011-10-19 (0 days ago)

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