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------- Comment From thorsten.diehl@xxxxxxxxxx 2016-06-28 12:13 EDT-------
(In reply to comment #12)
> 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

I can not install
makedumpfile_1.5.9-7
kexec-tools_2.0.10-2
- not even via xenial-proposed?

Thus I picked makedumpfile_1.6.0_1 and kexec-tools_2.0.10-2 (from yaketty??) manually and it works as expected.
/etc/default/kdump-tools has KDUMP_CMDLINE_APPEND populated with the values as intended, so I treat this is fixed in a newer version. When a fixed version is available for _xenial_ as well, we can close this bug.

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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

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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