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