Probing unnecessary I/O devices wastes memory and in extreme cases can cause the crshkernel to run OOM. Thus remove automatic lun scanning on s390.
Signed-off-by: Philipp Rudo prudo@redhat.com --- gen-kdump-sysconfig.sh | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/gen-kdump-sysconfig.sh b/gen-kdump-sysconfig.sh index bc37dee..5a16e92 100755 --- a/gen-kdump-sysconfig.sh +++ b/gen-kdump-sysconfig.sh @@ -97,7 +97,7 @@ ppc64le) s390x) update_param KEXEC_ARGS "-s" update_param KDUMP_COMMANDLINE_REMOVE \ - "hugepages hugepagesz slub_debug quiet log_buf_len swiotlb vmcp_cma cma hugetlb_cma prot_virt ignition.firstboot" + "hugepages hugepagesz slub_debug quiet log_buf_len swiotlb vmcp_cma cma hugetlb_cma prot_virt ignition.firstboot zfcp.allow_lun_scan" update_param KDUMP_COMMANDLINE_APPEND \ "nr_cpus=1 cgroup_disable=memory numa=off udev.children-max=2 panic=10 transparent_hugepage=never novmcoredd vmcp_cma=0 cma=0 hugetlb_cma=0" ;;