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kdump: remove sysctl.conf & sysctl.d/* files for kdump kernel 

Certain kernel parameters like min_free_kbytes can be configured at runtime
using sysctl. While this is useful in first kernel, it can lead to unnecessary
failures like OOM in kdump kernel. This patch enforces default vaules for all
sysctl parameters, in kdump kernel, by removing sysctl.conf & sysctl.d/* files.

Signed-off-by: Hari Bathini <hbathini@linux.vnet.ibm.com>
Acked-by: Dave Young <dyoung@redhat.com>
Acked-by: Baoquan He <bhe@redhat.com>
Acked-by: WANG Chao <chaowang@redhat.com>
This commit is contained in:
Hari Bathini 2014-12-08 17:29:08 +05:30 committed by WANG Chao
parent 63476302aa
commit 80238ade18
1 changed files with 13 additions and 0 deletions
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13
dracut-module-setup.sh
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@ -367,6 +367,18 @@ kdump_install_conf() {
rm -f /tmp/$$-kdump.conf
}
# Default sysctl parameters should suffice for kdump kernel.
# Remove custom configurations sysctl.conf & sysctl.d/*
remove_sysctl_conf() {
# As custom configurations like vm.min_free_kbytes can lead
# to OOM issues in kdump kernel, avoid them
rm -f "${initdir}/etc/sysctl.conf"
rm -rf "${initdir}/etc/sysctl.d"
rm -rf "${initdir}/run/sysctl.d"
rm -rf "${initdir}/usr/lib/sysctl.d"
}
kdump_iscsi_get_rec_val() {
local result
@ -575,6 +587,7 @@ kdump_install_random_seed() {
install() {
kdump_install_conf
remove_sysctl_conf
if is_ssh_dump_target; then
kdump_install_random_seed