------- Comment From thorsten.di...@de.ibm.com 2016-05-10 04:13 EDT------- Hi Louis,
it's easier than expected: If you kexec with cio_ignore as proposed above, 128M will be enough for both z/VM and LPAR. And to ease it up, you can use that cio_ignore mechanism in /etc/default/kdump-tools for z/VM and LPAR. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to makedumpfile in Ubuntu. 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: Confirmed 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. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-z-systems/+bug/1570775/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
