[tools 1/2] testbot/LibvirtTool: Separate ShutDown() from ShutDownIfOffSnapshot().

[Francois Gouget]

ShutDown() unconditionally performs a clean shutdown while
ShutDownIfOffSnapshot() only does so if the VM is currently running a
snapshot that requests them (contains '-off' in its name).

Signed-off-by: Francois Gouget 
---
 testbot/bin/LibvirtTool.pl | 50 ++++++++++++++++++++++++++++----------
 1 file changed, 37 insertions(+), 13 deletions(-)

diff --git a/testbot/bin/LibvirtTool.pl b/testbot/bin/LibvirtTool.pl
index 6364b306d9..759d8ec762 100755
--- a/testbot/bin/LibvirtTool.pl
+++ b/testbot/bin/LibvirtTool.pl
@@ -311,6 +311,35 @@ sub Halt($$)
 =pod
 =over 12

+=item C<ShutDown()>
+
+Attempt a clean shutdown of the VM (regardless of its current snapshot).
+
+Returns 0 if the shutdown failed, 1 otherwise.
+=back
+=cut
+
+sub ShutDown($$)
+{
+  my ($Domain, $TA) = @_;
+
+  if (Halt($TA, 0))
+  {
+    Debug(Elapsed($Start), " Waiting for the VM to shut down\n");
+    my $Deadline = time() + $WaitForShutdown;
+    while (time() <= $Deadline)
+    {
+      return 1 if (!$Domain->IsPoweredOn());
+      sleep(1);
+    }
+    Error "Timed out waiting for $VMKey to perform a clean shutdown\n";
+  }
+  return 0;
+}
+
+=pod
+=over 12
+
 =item C<ShutDownIfOffSnapshot()>

Attempt a clean shutdown of the VM if it is running a snapshot that requests
@@ -320,6 +349,8 @@ Returns 0 if the shutdown failed, 2 if it was successful and 1 if the VM was
 already powered off or a shutdown was not needed.
 =back
 =cut
+=back
+=cut

sub ShutDownIfOffSnapshot()
 {
@@ -333,22 +364,15 @@ sub ShutDownIfOffSnapshot()

Debug(Elapsed($Start), " Performing a clean shutdown of $VMKey/$CurrentSnapshot\n");
   LogMsg "Performing a clean shutdown of $VMKey/$CurrentSnapshot\n";
-  return 0 if (!Halt($VM->GetAgent(), 0));
-
-  Debug(Elapsed($Start), " Waiting for the VM to shut down\n");
-  my $Deadline = time() + $WaitForShutdown;
-  while (time() <= $Deadline)
+  if (ShutDown($Domain, $VM->GetAgent()))
   {
-    if (!$Domain->IsPoweredOn())
-    {
-      Debug(Elapsed($Start), " Successfully shut down $VMKey\n");
-      LogMsg "Successfully shut down $VMKey\n";
-      return 2;
-    }
-    sleep(1);
+    Debug(Elapsed($Start), " Successfully shut down $VMKey\n");
+    LogMsg "Successfully shut down $VMKey\n";
+    return 2;
   }
-  Error "Timed out waiting for $VMKey to perform a clean shutdown. Forcefully shutting down now...\n";

+  # In fact the caller will do so
+  Error "Forcefully shutting down $VMKey/$CurrentSnapshot now...\n";
   return 0;
 }