Resolves: bz2149846
Upstream: Fedora
Conflict: Move to kdump.sysconfig.s390 due to missing
677da8a ("sysconfig: use a simple generator script to maintain")
Author: Philipp Rudo <prudo@redhat.com>
Date: Tue Mar 7 14:45:35 2023 +0100
sysconfig: add zfcp.allow_lun_scan to KDUMP_COMMANDLINE_REMOVE on s390
Probing unnecessary I/O devices wastes memory and in extreme cases can
cause the crashkernel to run OOM. That's why the s390-tools maintain
their own module, 95zdev-kdump [1], that disables auto LUN scanning and
only configures zfcp devices that can be used as dump target. So remove
zfcp.allow_lun_scan from the kernel command line to prevent that we
accidentally overwrite the default set by the module.
[1] https://github.com/ibm-s390-linux/s390-tools/blob/master/zdev/dracut/95zdev-kdump/module-setup.sh
Signed-off-by: Philipp Rudo <prudo@redhat.com>
Reviewed-by: Coiby Xu <coxu@redhat.com>
Signed-off-by: Philipp Rudo <prudo@redhat.com>
Acked-by: Pingfan Liu <piliu@redhat.com>
