------- Comment From thorsten.di...@de.ibm.com 2016-07-13 05:53 EDT-------
Yep, that works as intended.
And thanks for also correcting maxcpus=1 to nr_cpus=1.
You may go ahead with that and SRU version 1.5.9-5ubuntu1 of both packages to 
xenial.

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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:
  Fix Released
Status in makedumpfile package in Ubuntu:
  Fix Released
Status in makedumpfile source package in Xenial:
  In Progress

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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