From 35156f763a84ec40327a21a5b99894e3e6e4bd36 Mon Sep 17 00:00:00 2001
From: Silvio Rhatto <rhatto@riseup.net>
Date: Fri, 22 Jun 2018 14:06:15 -0300
Subject: Check for virtualization flag and kvm group

---
 kvmx | 24 ++++++++++++++++++------
 1 file changed, 18 insertions(+), 6 deletions(-)

(limited to 'kvmx')

diff --git a/kvmx b/kvmx
index e639879..1718ac5 100755
--- a/kvmx
+++ b/kvmx
@@ -200,12 +200,24 @@ function __kvmx_initialize {
 
     mkdir -p $STATE_DIR $LOG_DIR
 
-    if [ ! -e "$image" ] && [ "$ACTION" != "up" ]           && [ "$ACTION" != "provision" ] && [ "$ACTION" != "purge" ]   \
-                         && [ "$ACTION" != "destroy" ]      && [ "$ACTION" != "install" ]   && [ "$ACTION" != "config" ]  \
-                         && [ "$ACTION" != "config_unset" ] && [ "$ACTION" != "create" ]    && [ "$ACTION" != "shell" ]   \
-                         && [ "$ACTION" != "boot" ]; then
-      echo "$BASENAME: file not found: $image"
-      exit 1
+    # Additional checks
+    if [ "$ACTION" != "up" ]           && [ "$ACTION" != "provision" ] && [ "$ACTION" != "purge" ]  && \
+       [ "$ACTION" != "destroy" ]      && [ "$ACTION" != "install" ]   && [ "$ACTION" != "config" ] && \
+       [ "$ACTION" != "config_unset" ] && [ "$ACTION" != "create" ]    && [ "$ACTION" != "shell" ]  && \
+       [ "$ACTION" != "boot" ]; then
+      if [ ! -e "$image" ]; then
+        echo "$BASENAME: file not found: $image"
+        exit 1
+      fi
+
+      # See http://www.linux-kvm.org/page/FAQ
+      if ! egrep -q '^flags.*(vmx|svm)' /proc/cpuinfo; then
+        echo "$BASENAME: WARNING: Intel VT or AMD-V not present at /proc/cpuinfo, expect slow performance"
+      fi
+
+      if ! groups `whoami` | grep -q 'kvm'; then
+        echo "$BASENAME: WARNING: user `whoami` not in kvm group, expect slow performance"
+      fi
     fi
   fi
 }
-- 
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