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[Launchpad Bug Tracker <1570775@xxxxxxxxxxxxxxxxxx>]

This bug was fixed in the package makedumpfile - 1:1.5.9-7

---------------
makedumpfile (1:1.5.9-7) sid; urgency=medium

  * [d/rules] Lower kexec-tools dependency to -2
      The ubuntu merge will happen on an 1:2.0.10-2 version so it cannot 
      depends on -3.

 -- Louis Bouchard <louis.bouchard@xxxxxxxxxx>  Tue, 31 May 2016
14:36:07 +0200

** Changed in: makedumpfile (Ubuntu)
       Status: Confirmed => Fix Released

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https://bugs.launchpad.net/bugs/1570775

Title:
  makekdump should re-exec with cio_ignore on s390x

Status in Ubuntu on IBM z Systems:
  Confirmed
Status in makedumpfile package in Ubuntu:
  Fix Released

Bug description:
  As per
  https://bugs.launchpad.net/ubuntu/+source/makedumpfile/+bug/1564475/comments/19

  We should re-exec with cio_ignore lines. As per report there, it
  should result in lowered required crashdump setting.

  Hypothetically, one should be able to test this imperially by lowering
  crashdump memory settings until kdump does not succeed anymore. And
  then generated and append `cio_ignore -k -u` to the
  KDUMP_CMDLINE_APPEND= and see that kdump starts working again with a
  lower memory usage.

  Once this is developed / verified / tested, we should probably SRU
  this back to xenial.

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