From e38a8fbe3c286ca3b2d4939664ddb9fc35cb8e5a Mon Sep 17 00:00:00 2001
From: jbjohnso <jbjohnso@8638fb3e-16cb-4fca-ae20-7b5d299a9bcd>
Date: Fri, 10 Jul 2009 19:08:06 +0000
Subject: [PATCH] -Support diskless guests by using the cfgdatastore attribute
 if defined allowing storage to be blank

git-svn-id: https://svn.code.sf.net/p/xcat/code/xcat-core/trunk@3758 8638fb3e-16cb-4fca-ae20-7b5d299a9bcd
---
 perl-xCAT/xCAT/VMCommon.pm          | 2 +-
 xCAT-server/lib/xcat/plugins/esx.pm | 6 +++++-
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/perl-xCAT/xCAT/VMCommon.pm b/perl-xCAT/xCAT/VMCommon.pm
index 6bb7d8d84..14907f2d7 100644
--- a/perl-xCAT/xCAT/VMCommon.pm
+++ b/perl-xCAT/xCAT/VMCommon.pm
@@ -18,7 +18,7 @@ sub grab_table_data{ #grab table data relevent to VM guest nodes
     $callback->({data=>["Cannot open vm table"]});
     return;
   }
-  $cfghash->{vm} = $vmtab->getNodesAttribs($noderange,['node','host','migrationdest','storage','memory','cpus','nics','bootorder','virtflags']);
+  $cfghash->{vm} = $vmtab->getNodesAttribs($noderange,['node','host','migrationdest','cfgstore','storage','memory','cpus','nics','bootorder','virtflags']);
   my $mactab = xCAT::Table->new("mac",-create=>1);
   my $nrtab= xCAT::Table->new("noderes",-create=>1);
   $cfghash->{mac} = $mactab->getAllNodeAttribs(['mac'],1);
diff --git a/xCAT-server/lib/xcat/plugins/esx.pm b/xCAT-server/lib/xcat/plugins/esx.pm
index 04337724d..ab6ce054c 100644
--- a/xCAT-server/lib/xcat/plugins/esx.pm
+++ b/xCAT-server/lib/xcat/plugins/esx.pm
@@ -1092,7 +1092,11 @@ sub register_vm_callback {
 sub getcfgdatastore {
     my $node = shift;
     my $dses = shift;
-    my $cfgdatastore = $tablecfg{vm}->{$node}->[0]->{storage}; #TODO: need a new cfglocation field in case of stateless guest?
+    my $cfgdatastore = $tablecfg{vm}->{$node}->[0]->{cfgstore};
+    unless ($cfgdatastore) {
+        $cfgdatastore = $tablecfg{vm}->{$node}->[0]->{storage}; 
+        #TODO: if multiple drives are specified, make sure to split this out
+    }
     $cfgdatastore =~ s/,.*$//;
     $cfgdatastore =~ s/\/$//;
     $cfgdatastore = "[".$dses->{$cfgdatastore}."]";