From ea6d9f7081b69db088bf2a1acceea75d2a3904b3 Mon Sep 17 00:00:00 2001
From: jbjohnso <jbjohnso@8638fb3e-16cb-4fca-ae20-7b5d299a9bcd>
Date: Wed, 30 Jan 2013 16:09:18 +0000
Subject: [PATCH] Have KVM storage support default to cache=none for now Fix
 lvm to use raw rather than qcow2, since qcow2 makes no sense for LVM

git-svn-id: https://svn.code.sf.net/p/xcat/code/xcat-core/trunk@15019 8638fb3e-16cb-4fca-ae20-7b5d299a9bcd
---
 xCAT-server/lib/xcat/plugins/kvm.pm | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/xCAT-server/lib/xcat/plugins/kvm.pm b/xCAT-server/lib/xcat/plugins/kvm.pm
index 84e4b1faf..cc40295b1 100644
--- a/xCAT-server/lib/xcat/plugins/kvm.pm
+++ b/xCAT-server/lib/xcat/plugins/kvm.pm
@@ -269,6 +269,9 @@ sub get_filepath_by_url { #at the end of the day, the libvirt storage api gives
     my $create = $args{create};
     my $force = $args{force};
     my $format = $args{format};
+    if ($url =~ /^lvm:/) {
+	$format = 'raw';
+    }
     unless ($format) {
         $format = 'qcow2';
     }
@@ -1610,7 +1613,7 @@ sub chvm {
             } elsif ($suffix =~ /vd/) {
                 $bus='virtio';
             }
-            my $xml = "<disk type='file' device='disk'><driver name='qemu' type='$format'/><source file='$_'/><target dev='$suffix' bus='$bus'/></disk>";
+            my $xml = "<disk type='file' device='disk'><driver name='qemu' type='$format' cache='none'/><source file='$_'/><target dev='$suffix' bus='$bus'/></disk>";
             if ($currstate eq 'on') { #attempt live attach
               eval {
               $dom->attach_device($xml);