IT21496: Warning message output when uninstalling the MQSeriesExplorer-Uxxxx Fix Pack package on Linux

APAR status

• Closed as program error.

Error description

• The MQExplorer v8.0.0.7 Fix Pack RPM package is removed from a
  Linux RedHat 7 system using the command:
  
    rpm -e MQSeriesExplorer-U8007-8.0.0-7
  
  and numerous messages of the following form are output the
  console:
  
  ... ... ...
  warning: file
  /opt/mqm/maintenance/8.0.0.7/MQSeriesExplorer/opt/mqm/mqexplorer
  /eclipse/artifacts.xml: remove failed: No such file or directory
  warning: file
  /opt/mqm/maintenance/8.0.0.7/MQSeriesExplorer/opt/mqm/mqexplorer
  /eclipse/about.html: remove failed: No such file or directory
  warning: file
  /opt/mqm/maintenance/8.0.0.7/MQSeriesExplorer/opt/mqm/mqexplorer
  /eclipse/MQExplorerSDK.zip: remove failed: No such file or
  directory
  warning: file
  /opt/mqm/maintenance/8.0.0.7/MQSeriesExplorer/opt/mqm/mqexplorer
  /eclipse/.eclipseproduct: remove failed: No such file or
  directory
  
  
  After the operation, the fix pack RPM package appears to have
  removed itself successfully.
  

Local fix

Problem summary

• ****************************************************************
  USERS AFFECTED:
  Users of IBM MQ on the Linux (x86/x86-64) platform who have
  installed an MQExplorer component RPM Fix Pack package:
  
    MQSeriesExplorer-Uxxxx-x.x.x-x
  
  where 'xxxx-x.x.x-x' corresponds to the fix pack version, such
  as '8007-8.0.0-7'.
  
  The version of RPM which is used is also significant.  Older
  versions of RPM such as that supplied with RedHat Enterprise
  Linux (RHEL) v6 did not report the warning messages.  More
  recent operating systems which supply a more recent version of
  RPM do report the warnings, which include the operating system
  versions:
  
    SUSE 12
    RHEL 7
    Ubuntu 14.04
  
  
  This problem only affects the MQ v8.0 release.
  
  
  Platforms affected:
  Linux on x86-64, Linux on x86
  
  ****************************************************************
  PROBLEM DESCRIPTION:
  APAR IT08513:
  
    http://www.ibm.com/support/docview.wss?uid=swg1IT08513
  
  corrected a problem where the Fix Pack packages on Linux were
  not enabling the new MQExplorer plugins as supplied with the
  v8.0 Fix Packs.
  
  In doing so, a backup of the default installation location
  directory:
  
    /opt/mqm/mqexplorer/eclipse
  
  was created, such that when the Fix Pack was uninstalled, the
  state of the MQExplorer installation would return to the same
  state as before the Fix Pack was applied.
  
  
  However, when the Fix Pack package was being removed, the
  ordering of the restoration of this backup was incorrect.
  
  The directory (and so also its contents) :
  
    /opt/mqm/mqexplorer/eclipse
  
  was removed first.
  
  The RPM package manager then attempted to remove the files
  corresponding to the Fix Pack package, which included the files
  in /opt/mqm/mqexplorer/eclipse.  However these had already been
  removed by the previous step of the uninstallation process.
  
  The directory was then restored to the previous contents of this
  directory from the backed up archive.
  
  By default, older versions of RPM did not report any messages to
  the console listing the missing files in the deleted
  /opt/mqm/mqexplorer/eclipse directory.
  
  However newer versions of RPM such as that supplied with RedHat
  Enterprise Linux v7 do report warning messages for each file
  which was found to be missing, which produces output of the
  form:
  
  warning: file
  /opt/mqm/maintenance/8.0.0.7/MQSeriesExplorer/opt/mqm/mqexplorer
  /eclipse/runwithtrace: remove failed: No such file or directory
  
  for every file which was originally under the directory:
  
    /opt/mqm/mqexplorer/eclipse
  
  
  Other than producing excessive output to the console, there was
  no negative consequence to these warning messages.  RPM is
  warning that the files are missing, as it attempts to remove
  them from the filesystem.
  

Problem conclusion

• The MQExplorer Fix Pack uninstall scripts have been updated to
  delete the directory:
  
    /opt/mqm/mqexplorer/eclipse
  
  after RPM has had the opportunity to remove the files associated
  with the Fix Pack package, which prevents the warning messages
  from being output by RPM.
  
  While the problem reported does not affect IBM MQ v9.0, the
  equivalent code change has been included to pro-actively guard
  against introduction of the issue at this release.
  
  ---------------------------------------------------------------
  The fix is targeted for delivery in the following PTFs:
  
  Version    Maintenance Level
  v8.0       8.0.0.8
  v9.0 CD    9.0.4
  v9.0 LTS   9.0.0.3
  
  The latest available maintenance can be obtained from
  'WebSphere MQ Recommended Fixes'
  http://www-1.ibm.com/support/docview.wss?rs=171&uid=swg27006037
  
  If the maintenance level is not yet available information on
  its planned availability can be found in 'WebSphere MQ
  Planned Maintenance Release Dates'
  http://www-1.ibm.com/support/docview.wss?rs=171&uid=swg27006309
  ---------------------------------------------------------------
  

Temporary fix

Comments

APAR Information

• APAR is sysrouted FROM one or more of the following:

• APAR is sysrouted TO one or more of the following:

Fix information

• Fixed component name

  WMQ BASE MULTIP

• Fixed component ID

  5724H7251

Applicable component levels

• R800 PSY

     UP