From 7626772856ebee610623de043d184ae7ad1a12a5 Mon Sep 17 00:00:00 2001
From: Wolfgang Link <wolfgang@linksystems.org>
Date: Mon, 17 Nov 2014 09:52:30 +0100
Subject: [PATCH] Add check if host has enough real CPUs for starting VM

To prevent a Qemu CPU emualtion!

Signed-off-by: Wolfgang Link <wolfgang@linksystems.org>
---
 PVE/QemuServer.pm | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/PVE/QemuServer.pm b/PVE/QemuServer.pm
index 02bf404e..29705982 100644
--- a/PVE/QemuServer.pm
+++ b/PVE/QemuServer.pm
@@ -2588,6 +2588,12 @@ sub config_to_command {
     my $cores = $conf->{cores} || 1;
     my $maxcpus = $conf->{maxcpus} if $conf->{maxcpus};
 
+    my $total_cores = $sockets * $cores;
+    my $allowed_cores = $cpuinfo->{cpus};
+
+    die "MAX $allowed_cores Cores allowed per VM on this Node"
+	if ($allowed_cores < $total_cores);
+
     if ($maxcpus) {
 	push @$cmd, '-smp', "cpus=$cores,maxcpus=$maxcpus";
     } else {