[Bug 994533] Re: difficult to recover a system when a conffile of a M-A: same package has a corrupted checksum

[Danny Sauer]

Is it a huge coincidence that my system has encountered the exact same
behavior (including the same "bad" checksum) this morning when I
attempted to update?

...
(Reading database ... 518114 files and directories currently installed.)
Unpacking libldap-2.4-2:i386 (from .../libldap-2.4-2_2.4.28-1.1ubuntu4.2_i386.deb) ...
dpkg: error processing /var/cache/apt/archives/libldap-2.4-2_2.4.28-1.1ubuntu4.2_i386.deb (--unpack):
 conffile './etc/ldap/ldap.conf' is not in sync with other instances of the same package
No apport report written because MaxReports is reached already
                                                              dpkg-deb: error: subprocess paste was killed by signal (Broken pipe)
Errors were encountered while processing:
 /var/cache/apt/archives/libldap-2.4-2_2.4.28-1.1ubuntu4.2_i386.deb
...


sauer at hotrod:~$ dpkg-query -f='${PackageSpec}\t${Version}\n${Conffiles}\n' -W 'libldap-2.4-2:*'
libldap-2.4-2	2.4.28-1.1ubuntu4.2
 /etc/ldap/ldap.conf 7fac807f65d84394410881bc16f1198a
libldap-2.4-2:i386	
sauer at hotrod:~$ uname -a
Linux hotrod 3.2.0-39-generic #62-Ubuntu SMP Thu Feb 28 00:28:53 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux
sauer at hotrod:~$ lsb_release -d
Description:	Ubuntu 12.04.1 LTS

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https://bugs.launchpad.net/bugs/994533

Title:
  difficult to recover a system when a conffile of a M-A: same package
  has a corrupted checksum

Status in “dpkg” package in Ubuntu:
  Triaged

Bug description:
  On a Ubuntu 12.04 x86_64 I try to install ia32-libs:

  root# apt-get install ia32-libs
  (...)
  Errors were encountered while processing:
   /var/cache/apt/archives/libldap-2.4-2_2.4.28-1.1ubuntu4_i386.deb
  E: Sub-process /usr/bin/dpkg returned an error code (1)

  root# apt-get install ia32-libs
  Reading package lists... Done
  Building dependency tree
  Reading state information... Done
  ia32-libs is already the newest version.
  You might want to run 'apt-get -f install' to correct these:
  The following packages have unmet dependencies:
   libcurl3:i386 : Depends: libldap-2.4-2:i386 (>= 2.4.7) but it is not going to be installed
  E: Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution).

  
  root# apt-get -f install
  Reading package lists... Done
  Building dependency tree
  Reading state information... Done
  Correcting dependencies... Done
  The following extra packages will be installed:
    libldap-2.4-2:i386
  The following NEW packages will be installed:
    libldap-2.4-2:i386
  0 upgraded, 1 newly installed, 0 to remove and 4 not upgraded.
  297 not fully installed or removed.
  Need to get 0 B/186 kB of archives.
  After this operation, 515 kB of additional disk space will be used.
  Do you want to continue [Y/n]?
  (Reading database ... 25353 files and directories currently installed.)
  Unpacking libldap-2.4-2:i386 (from .../libldap-2.4-2_2.4.28-1.1ubuntu4_i386.deb) ...
  dpkg: error processing /var/cache/apt/archives/libldap-2.4-2_2.4.28-1.1ubuntu4_i386.deb (--unpack):
   conffile './etc/ldap/ldap.conf' is not in sync with other instances of the same package
  No apport report written because MaxReports is reached already
                                                                Processing triggers for man-db ...
  Errors were encountered while processing:
   /var/cache/apt/archives/libldap-2.4-2_2.4.28-1.1ubuntu4_i386.deb
  E: Sub-process /usr/bin/dpkg returned an error code (1)

  root# lsb_release -rd 
  Description:    Ubuntu 12.04 LTS
  Release:        12.04

  root@# uname -a
  Linux eduroam1 3.2.0-24-virtual #37-Ubuntu SMP Wed Apr 25 10:17:19 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux

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