[Bug 1971959] Update Released

Brian Murray 1971959 at bugs.launchpad.net
Tue Jul 5 20:35:33 UTC 2022


The verification of the Stable Release Update for s390-tools has
completed successfully and the package is now being released to
-updates.  Subsequently, the Ubuntu Stable Release Updates Team is being
unsubscribed and will not receive messages about this bug report.  In
the event that you encounter a regression using the package from
-updates please report a new bug using ubuntu-bug and tag the bug report
regression-update so we can easily find any regressions.

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https://bugs.launchpad.net/bugs/1971959

Title:
  [UBUNTU 22.04] dbginfo.sh: stabilization of data collection

Status in Ubuntu on IBM z Systems:
  Fix Committed
Status in s390-tools package in Ubuntu:
  Fix Released
Status in s390-tools source package in Jammy:
  Fix Released
Status in s390-tools source package in Kinetic:
  Fix Released

Bug description:
  SRU Justification:
  ==================

  [Impact]

   * The s390x-specific dbginfo.sh script, used to collect runtime,
     configuration and trace information for debugging Linux on IBM Z,
     has stabilization issues while collecting data.

   * Script hangups are possible on single commands,

   * potentially missing data collection on error

   * and overwrites of buffers by diag commands.

  [Test Plan]

   * Prepare an IBM zSystems or LinuxONE system
     (ideally an LPAR as well as a z/VM guest)
     with an Ubuntu 22.04 system.

   * The s390-tools package is mandatory and always installed,
     but needs to be replaced with an updated/fixed version -
     pick the version from the PPA that is mentioned below.

   * Execute dbginfo.sh (as root or with sudo).

   * Monitor the output and verify if all 18 steps are completed,
     without any crashes or hangs.

   * Inspect the size and content of the result file:
     /tmp/DBGINFO-*.tgz

  [Where problems could occur]

   * The script might no run on older generations anymore.

   * Some of the things that are gathered might not be
     properly picked (like z/VM data on LPAR).

   * If a step fails (like in the past), no summarized
     output might be generated.

  __________

  Description:   dbginfo.sh: stabilization of data collection
  Symptom:        - script hangup possible on single commands
                  - missing data collection on error
                  - overwrite of buffers by diag commands
  Problem:       hangup and loss of data collection
  Solution:      rework code regarding
                  - add timeout function
                  - remove problematic commands
                  - include handling improvements
  Component:     s390-tools

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