On Fri, 18 Sep 2020 11:25:46 +0800 Dave Young <dyoung@xxxxxxxxxx> wrote: > crash_kexec_post_notifiers enables running various panic notifier > before kdump kernel booting. This increases risks of kdump failure. > It is well documented in kernel-parameters.txt. We do not suggest > people to enable it together with kdump unless he/she is really sure. > This is also not suggested to be enabled by default when users are > not aware in distributions. > > But unfortunately it is enabled by default in systemd, see below > discussions in a systemd report, we can not convince systemd to change > it: > https://github.com/systemd/systemd/issues/16661 > > Actually we have got reports about kdump kernel hangs in both s390x > and powerpcle cases caused by the systemd change, also some x86 cases > could also be caused by the same (although that is in Hyper-V code > instead of systemd, that need to be addressed separately). > > Thus to avoid the auto enablement here just disable the param writable > permission in sysfs. > Well. I don't think this is at all a desirable way of resolving a disagreement with the systemd developers At the above github address I'm seeing "ryncsn added a commit to ryncsn/systemd that referenced this issue 9 days ago", "pstore: don't enable crash_kexec_post_notifiers by default". So didn't that address the issue? _______________________________________________ kexec mailing list kexec@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/kexec
