diff --git a/bz2090370-CTDB-move-process-to-root-cgroup-if-rt-enabled.patch b/bz2090370-CTDB-move-process-to-root-cgroup-if-rt-enabled.patch
new file mode 100644
index 0000000..7f0c7ef
--- /dev/null
+++ b/bz2090370-CTDB-move-process-to-root-cgroup-if-rt-enabled.patch
@@ -0,0 +1,47 @@
+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
diff --git a/resource-agents.spec b/resource-agents.spec
index 8c44a40..ebe95e2 100644
--- a/resource-agents.spec
+++ b/resource-agents.spec
@@ -69,7 +69,7 @@
 Name:		resource-agents
 Summary:	Open Source HA Reusable Cluster Resource Scripts
 Version:	4.9.0
-Release:	27%{?rcver:%{rcver}}%{?numcomm:.%{numcomm}}%{?alphatag:.%{alphatag}}%{?dirty:.%{dirty}}%{?dist}
+Release:	28%{?rcver:%{rcver}}%{?numcomm:.%{numcomm}}%{?alphatag:.%{alphatag}}%{?dirty:.%{dirty}}%{?dist}
 License:	GPLv2+ and LGPLv2+
 URL:		https://github.com/ClusterLabs/resource-agents
 %if 0%{?fedora} || 0%{?centos_version} || 0%{?rhel}
@@ -118,6 +118,7 @@ Patch26:	bz1908146-bz1908147-bz1908148-bz1949114-openstack-agents-warn-when-open
 Patch27:	bz2103370-ocf-tester-1-update.patch
 Patch28:	bz2103370-ocf-tester-2-remove-deprecated-lrmd-lrmadmin-code.patch
 Patch29:	bz1908146-bz1908147-bz1908148-bz1949114-openstack-agents-set-domain-parameters-default.patch
+Patch30:	bz2090370-CTDB-move-process-to-root-cgroup-if-rt-enabled.patch
 
 # bundle patches
 Patch1000:	7-gcp-bundled.patch
@@ -327,6 +328,7 @@ exit 1
 %patch27 -p1
 %patch28 -p1
 %patch29 -p1
+%patch30 -p1
 
 chmod 755 heartbeat/nova-compute-wait
 chmod 755 heartbeat/NovaEvacuate
@@ -902,6 +904,11 @@ ccs_update_schema > /dev/null 2>&1 ||:
 %{_usr}/lib/ocf/lib/heartbeat/OCF_*.pm
 
 %changelog
+* Thu Aug  4 2022 Oyvind Albrigtsen <oalbrigt@redhat.com> - 4.9.0-28
+- CTDB: move process to root cgroup if realtime scheduling is enabled
+
+  Resolves: rhbz#2090370
+
 * Thu Jul 14 2022 Oyvind Albrigtsen <oalbrigt@redhat.com> - 4.9.0-27
 - ocf-tester: add testing tool