Index: debian/univention-xen.univention-config-registry-variables
===================================================================
--- debian/univention-xen.univention-config-registry-variables	(Revision 21493)
+++ debian/univention-xen.univention-config-registry-variables	(Arbeitskopie)
@@ -81,3 +81,15 @@
 Description[en]=Enable/Disable the Xen XMLRPC service via TCP/IP socket [no]
 Type=bool
 Categories=service-xen
+
+[xen/dom0/min_mem]
+Description[de]=Minimaler Speicher (in MB) für dom0.
+Description[en]=Lowest permissible memory level (in MB) for dom0.
+Type=int
+Categories=service-xen
+
+[xen/dom0/ballooning]
+Description[de]=Aktiviere Auto-Ballooning in dom0.
+Description[en]=Enable auto-ballooning of dom0.
+Type=bool
+Categories=service-xen
Index: debian/postinst
===================================================================
--- debian/postinst	(Revision 21493)
+++ debian/postinst	(Arbeitskopie)
@@ -31,14 +31,25 @@
 
 univention-config-registry set xen/repository?"file:///var/lib/univention-server-cdrom"
 
-eval "$(univention-config-registry shell kernel/modules)"
+eval "$(univention-config-registry shell kernel/modules server/role)"
 
 echo "$kernel_modules" | grep xen-evtchn >/dev/null
 if [ $? = 1 ]; then
 	univention-config-registry set kernel/modules="$kernel_modules;xen-evtchn"
 fi
 
+case "$server_role" in
+domaincontroller_*) # domaincontroller_master domaincontroller_backup domaincontroller_slave
+	ucr set xen/dom0/min_mem?"1024" xen/dom0/ballooning?"no" grub/xenhopt?"dom0_mem=1024M dom0_max_vcpus=1 dom0_vcpus_pin"
+	;;
+memberserver)
+	ucr set xen/dom0/min_mem?"512" xen/dom0/ballooning?"no" grub/xenhopt?"dom0_mem=512M dom0_max_vcpus=1 dom0_vcpus_pin"
+	;;
+*) # mobileclient mobile_client managed_client fatclient basesystem
+	ucr set xen/dom0/min_mem?"196" xen/dom0/ballooning?"yes"
+	;;
+esac
+
 #DEBHELPER#
 
 exit 0
-
Index: debian/changelog
===================================================================
--- debian/changelog	(Revision 21493)
+++ debian/changelog	(Arbeitskopie)
@@ -1,3 +1,9 @@
+univention-xen (3.0.6-2) unstable; urgency=low
+
+  * Disbale ballooning on DCs (Bug #20013)
+
+ -- Philipp Hahn <hahn@univention.de>  Tue, 14 Dec 2010 17:34:00 +0100
+
 univention-xen (3.0.5-1) unstable; urgency=low
 
   * allow univention-kernel-image-2.6.18-xen as dom0 meta package. Bug
Index: conffiles/etc/xen/xend-config.sxp
===================================================================
--- conffiles/etc/xen/xend-config.sxp	(Revision 21493)
+++ conffiles/etc/xen/xend-config.sxp	(Arbeitskopie)
@@ -221,11 +221,11 @@
 # dom0-min-mem is the lowest permissible memory level (in MB) for dom0.
 # This is a minimum both for auto-ballooning (as enabled by
 # enable-dom0-ballooning below) and for xm mem-set when applied to dom0.
-(dom0-min-mem 196)
+(dom0-min-mem @%@xen/dom0/min_mem@%@)
 
 # Whether to enable auto-ballooning of dom0 to allow domUs to be created.
 # If enable-dom0-ballooning = no, dom0 will never balloon out.
-(enable-dom0-ballooning yes)
+(enable-dom0-ballooning @%@xen/dom0/ballooning@%@)
 
 # In SMP system, dom0 will use dom0-cpus # of CPUS
 # If dom0-cpus = 0, dom0 will take all cpus available