resource-agents/bz2090370-CTDB-move-process-to-root-cgroup-if-rt-enabled.patch

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From 99c4f2af92a10155cf072198c72deffaed3883a5 Mon Sep 17 00:00:00 2001
From: Oyvind Albrigtsen <oalbrigt@redhat.com>
Date: Wed, 3 Aug 2022 17:20:31 +0200
Subject: [PATCH] CTDB: move process to root cgroup if realtime scheduling is
enabled
---
heartbeat/CTDB.in | 2 ++
heartbeat/ocf-shellfuncs.in | 12 ++++++++++++
2 files changed, 14 insertions(+)
diff --git a/heartbeat/CTDB.in b/heartbeat/CTDB.in
index d25d026ca..46f56cfac 100755
--- a/heartbeat/CTDB.in
+++ b/heartbeat/CTDB.in
@@ -709,6 +709,8 @@ EOF
invoke_ctdbd() {
local vers="$1"
+ ocf_move_to_root_cgroup_if_rt_enabled
+
ocf_version_cmp "$vers" "4.9.0"
if [ "$?" -ne "0" ]; then
# With 4.9+, all ctdbd binary parameters are provided as
diff --git a/heartbeat/ocf-shellfuncs.in b/heartbeat/ocf-shellfuncs.in
index 6be4e4e30..2c53a967a 100644
--- a/heartbeat/ocf-shellfuncs.in
+++ b/heartbeat/ocf-shellfuncs.in
@@ -672,6 +672,18 @@ EOF
systemctl daemon-reload
}
+# move process to root cgroup if realtime scheduling is enabled
+ocf_move_to_root_cgroup_if_rt_enabled()
+{
+ if [ -e "/sys/fs/cgroup/cpu/cpu.rt_runtime_us" ]; then
+ echo $$ >> /sys/fs/cgroup/cpu/tasks
+
+ if [ "$?" -ne "0" ]; then
+ ocf_log warn "Unable to move PID $$ to the root cgroup"
+ fi
+ fi
+}
+
# usage: crm_mon_no_validation args...
# run crm_mon without any cib schema validation
# This is useful when an agent runs in a bundle to avoid potential