From 11490cf22877c5208b8ae54c1b222b6b8d9328de Mon Sep 17 00:00:00 2001
From: Alexandre Derumier <aderumier@odiso.com>
Date: Fri, 22 Feb 2013 14:35:51 +0100
Subject: [PATCH] set cache=none if option is not defined

Signed-off-by: Alexandre Derumier <aderumier@odiso.com>
---
 PVE/QemuServer.pm | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/PVE/QemuServer.pm b/PVE/QemuServer.pm
index 6bab0161..ef9f49a6 100644
--- a/PVE/QemuServer.pm
+++ b/PVE/QemuServer.pm
@@ -1106,6 +1106,8 @@ sub print_drive_full {
 	}
     }
 
+    $opts .= ",cache=none" if !$drive->{cache};
+
     my $pathinfo = $path ? "file=$path," : '';
 
     return "${pathinfo}if=none,id=drive-$drive->{interface}$drive->{index}$opts";