** Description changed: + [SRU justification] + kernel crash dump fails to work without the modification. + + [Impact] + Broken functionality. + + [Fix] + Add cio_ignore -k -y output to the kexec command. + + [Test Case] + Follow indication in comment #2 to reproduce. With the fix, kdump will function as expected. + + [Regression] + A regression situation is outlined in comment #16. Newer channel devices may not be visible because of the added cio_ignore output. This may be worked around with a single command. + + The resolution outweights this limitation that can be easily worked + around. + + [Original description of the problem] + 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.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1570775 Title: makekdump should re-exec with cio_ignore on s390x To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-z-systems/+bug/1570775/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
