From 8f6ce0c025714906e2409921e8c797df6b7aba2f Mon Sep 17 00:00:00 2001
From: "Ruben S. Montero" <rsmontero@opennebula.org>
Date: Fri, 21 Jan 2022 14:39:30 +0100
Subject: [PATCH] M #-: Cooldown period after shutdown a VM

---
 src/lcm/LifeCycleStates.cc | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/src/lcm/LifeCycleStates.cc b/src/lcm/LifeCycleStates.cc
index bcf5a4784e..8c40b23259 100644
--- a/src/lcm/LifeCycleStates.cc
+++ b/src/lcm/LifeCycleStates.cc
@@ -1120,13 +1120,21 @@ void LifeCycleManager::trigger_monitor_poweron(int vid)
             VirtualMachineTemplate quota_tmpl;
             string error;
 
+            time_t the_time = time(0);
+
+            // Prevent Monitor and VMM driver race condition.
+            // Ignore state updates for 30s after state changes
+            if ( the_time - vm->get_running_etime() < 30 )
+            {
+                vm->log("VMM", Log::INFO, "Ignoring VM state update");
+                return;
+            }
+
             int uid = vm->get_uid();
             int gid = vm->get_gid();
 
             vm->log("VMM",Log::INFO,"VM found again by the drivers");
 
-            time_t the_time = time(0);
-
             vm->set_state(VirtualMachine::ACTIVE);
 
             vm->set_state(VirtualMachine::RUNNING);