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[Launchpad Bug Tracker <1741860@xxxxxxxxxxxxxxxxxx>]

This bug was fixed in the package makedumpfile - 1:1.6.6-2ubuntu1

---------------
makedumpfile (1:1.6.6-2ubuntu1) eoan; urgency=medium

  [ Thadeu Lima de Souza Cascardo ]
  * Merge from Debian unstable.  Remaining changes:
    - Bump amd64 crashkernel from 384M-:128M to 512M-:192M.
  * Add kdump retry/delay mechanism when dumping over network (LP: #1681909)
  * Allow proper reload of kdump after multiple hotplug events. (LP: #1828596)

  [ Connor Kuehl ]
  * Let the kernel decide the crashkernel offset for ppc64el (LP: #1741860)

makedumpfile (1:1.6.6-2) unstable; urgency=medium

  [ Guilherme G. Piccoli ]
  * Add kdump retry/delay mechanism when dumping over network

  [ Thadeu Lima de Souza Cascardo ]
  * Use a different service for vmcore dump.
  * Use maxcpus instead of nr_cpus on ppc64el.
  * Reload kdump when CPU is brought online.
  * Allow proper reload of kdump after multiple hotplug events.

makedumpfile (1:1.6.6-1) unstable; urgency=medium

  * Update to new upstream version 1.6.6.

 -- Thadeu Lima de Souza Cascardo <cascardo@xxxxxxxxxxxxx>  Tue, 06 Aug
2019 12:18:15 -0300

** Changed in: makedumpfile (Ubuntu Eoan)
       Status: In Progress => Fix Released

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https://bugs.launchpad.net/bugs/1741860

Title:
  Use the kernel default for crashkernel offset

Status in The Ubuntu-power-systems project:
  In Progress
Status in makedumpfile package in Ubuntu:
  Fix Released
Status in makedumpfile source package in Xenial:
  In Progress
Status in makedumpfile source package in Bionic:
  In Progress
Status in makedumpfile source package in Disco:
  In Progress
Status in makedumpfile source package in Eoan:
  Fix Released

Bug description:
  [Impact]

   * The value chosen for ppc64el of 128MB aligns with that of the
  kernel default. That may change some day, so it would be best to let
  the kernel decide what value it should use. If the value does change
  and the kernel is not allowed to choose a value, this may stop the
  kernel from booting on a production system.

  [Test Case]

   Run `cat /etc/default/grub.d/kdump-tools.cfg`

   * Expected result: there is no offset specified at the end of the
  line (.e.g, @128M).

   * Actual result: For Xenial, Bionic, Disco, and Eoan there are
  offsets specified.

  [Regression Potential]

   * Right now, the offset described in the kdump-tools.cfg aligns with
  that of what the kernel would select, so since they are the same we
  would expect no change in operation.

  
  Original bug description follows:
  -----------------------------------------

  == Comment: #0 - Hari Krishna Bathini <hbathini@xxxxxxxxxx> - 2018-01-08 01:06:41 ==
  ---Problem Description---
  A default offset of 128MB is enforced for crashkernel by kdump-tools utility
  overriding the kernel default.

  While the kernel default offset for crashkernel is also 128MB, that may change
  and the right thing to do would be to let the kernel decide on the offset of
  crashkernel in the default scenario..

  Get rid of "@128M" in kdump-tools.cfg file

  Contact Information = hbathini@xxxxxxxxxx

  ---uname output---
  na

  Machine Type = na

  ---Debugger---
  A debugger is not configured

  ---Steps to Reproduce---
   # cat /etc/default/grub.d/kdump-tools.cfg
  GRUB_CMDLINE_LINUX_DEFAULT="$GRUB_CMDLINE_LINUX_DEFAULT crashkernel=2G-4G:320M,4G-32G:512M,32G-64G:1024M,64G-128G:2048M,128G-:4096M@128M"
  ---

  The offset is specified via kdump-tools where as the kernel may be the right place to
  set an offset by default..

  Userspace tool common name: kdump-tools

  The userspace tool has the following bit modes: 64-bit

  Userspace rpm: kdump-tools

  Userspace tool obtained from project website:  na

  *Additional Instructions for hbathini@xxxxxxxxxx:
  -Attach ltrace and strace of userspace application.

  == Comment: #3 - MAMATHA INAMDAR <mainamdar@xxxxxxxxxx> - 2018-01-08 03:05:05 ==
  This bug is opened to follow-up other bug based on the comment 19
  https://bugzilla.linux.ibm.com/show_bug.cgi?id=152905#c19 (Canonical Launchpad 	1676884 )

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