cumulative commit of local branch, xen modifications and vmgrid plugin

11 files changed, 1713 insertions, 0 deletions

diff --git a/os-plugins/plugins/qemukvm/files/ifdown b/os-plugins/plugins/qemukvm/files/ifdown
new file mode 100644
index 00000000..be6ec913
--- /dev/null
+++ b/os-plugins/plugins/qemukvm/files/ifdown
@@ -0,0 +1,31 @@
+#!/bin/sh
+# Copyright (c) 2009 - OpenSLX GmbH
+#
+# This program is free software distributed under the GPL version 2.
+# See http://openslx.org/COPYING
+#
+# If you have any feedback please consult http://openslx.org/feedback and
+# send your suggestions, praise, or complaints to feedback@openslx.org
+#
+# General information about OpenSLX can be found at http://openslx.org/
+# -----------------------------------------------------------------------------
+# ifdown
+#    - Script used for network cleanup of qemukvm in stage4
+# -----------------------------------------------------------------------------
+
+# Clean up script
+
+case "$1" in
+  tap1)
+      # Bringing down the dhcp server
+      killall udhcpd 2>/dev/null
+      #iptables -t nat -D POSTROUTING -o br0 -j MASQUERADE 2>/dev/null
+  ;;
+  tap2)
+      # Bringing down the dhcp server
+      killall udhcpd 2>/dev/null
+  ;;
+esac
+
+# Produce a clean exit status
+exit 0
diff --git a/os-plugins/plugins/qemukvm/files/ifup b/os-plugins/plugins/qemukvm/files/ifup
new file mode 100644
index 00000000..43956b31
--- /dev/null
+++ b/os-plugins/plugins/qemukvm/files/ifup
@@ -0,0 +1,75 @@
+#!/bin/sh
+# Copyright (c) 2009..2010 - OpenSLX GmbH
+#
+# This program is free software distributed under the GPL version 2.
+# See http://openslx.org/COPYING
+#
+# If you have any feedback please consult http://openslx.org/feedback and
+# send your suggestions, praise, or complaints to feedback@openslx.org
+#
+# General information about OpenSLX can be found at http://openslx.org/
+# -----------------------------------------------------------------------------
+# ifup
+#    - Script used for network setup of qemukvm in stage4
+# -----------------------------------------------------------------------------
+
+. /etc/opt/openslx/openslx.conf
+
+PLUGINCONFDIR=${OPENSLX_DEFAULT_CONFDIR}/plugins/qemukvm
+
+# get VM_ID through tap name
+VM_ID=$(echo $1 | grep -oE "0[0-4]$")
+QKTMPDIR=/tmp/qemukvm/${USER}/${VM_ID}
+
+# Use the udhcpcd as DHCP server and brctl as provided by default in OpenSLX
+# environments via uclibc-wrapper.
+. ${PLUGINCONFDIR}/network.conf
+
+# Just decide by the virtual network device used which kind of connection
+# should be set up (passed in $1): tap0 = bridge, tap1 = nat, tap2 = hostonly.
+case "$1" in
+  tapbridge0*)
+    # Adding the tap0 interface to the existing bridge configured in stage3
+    #sudo /opt/openslx/uclib-rootfs/sbin/tunctl -t $1 >/dev/null 2>&1
+    sudo ip link set dev $1 up
+    #sudo /opt/openslx/uclib-rootfs/usr/sbin/brctl addif br0 $1
+    echo "1" >/proc/sys/net/ipv4/conf/br0/forwarding
+    echo "1" >/proc/sys/net/ipv4/conf/$1/forwarding
+  ;;
+  tapnat0*)
+    # Configuring DHCP on host tap1 interface and enable IP masquerading
+    #sudo /opt/openslx/uclib-rootfs/sbin/tunctl -t $1 >/dev/null 2>&1
+    sudo ip addr add ${nataddress} dev $1
+    # not necessary since already done by run-virt.include
+    #[ -d ${QKTMPDIR} ] || mkdir -p ${QKTMPDIR}
+    # cut the last .NNN/MM from nataddress ${natnetwork%.*}
+    # TODO: we use here atatic address, maybe change later
+    sed -e "s,NWIF,$1,;s,CNETWORK,192.168.1${VM_ID}.254," \
+        -e "s,PIDFILE,${QKTMPDIR}/udhcpd.pid," \
+        -e "s,LEASEFILE,${QKTMPDIR}/udhcpd.leases," \
+           ${OPENSLX_DEFAULT_CONFDIR}/udhcpd.conf \
+      >${QKTMPDIR}/udhcpd.conf
+    touch ${QKTMPDIR}/udhcpd.leases
+    # ip link set $1 up
+    # ip addr add 192.168.101.254/24 dev $1
+    sudo /opt/openslx/uclib-rootfs/usr/sbin/udhcpd \
+      -S ${QKTMPDIR}/udhcpd.conf
+    # iptables -t nat -A POSTROUTING -o br0 -j MASQUERADE
+  ;;
+  taphost0*)
+    # Configuring DHCP on host tap2 interface
+    #sudo /opt/openslx/uclib-rootfs/sbin/tunctl -t $1 >/dev/null 2>&1
+    sudo ip addr add ${hoaddress} dev $1
+    #[ -d ${QKTMPDIR} ] || mkdir -p ${QKTMPDIR}
+    sed "s,NWIF,$1,;s,USER,${USER},;s,CNETWORK,192.168.1${VM_ID}.254," \
+      ${OPENSLX_DEFAULT_CONFDIR}/udhcpd.conf >${QKTMPDIR}/udhcpd.conf
+    touch ${QKTMPDIR}/udhcpd.leases
+    # ip link set $1 up
+    # ip addr add 192.168.102.254/24 dev $1
+    sudo /opt/openslx/uclib-rootfs/usr/sbin/udhcpd \
+      -S ${QKTMPDIR}/udhcpd.conf
+  ;;
+esac
+
+# Produce a clean exit status
+exit 0
diff --git a/os-plugins/plugins/vmgrid/OpenSLX/OSPlugin/vmgrid.pm b/os-plugins/plugins/vmgrid/OpenSLX/OSPlugin/vmgrid.pm
new file mode 100644
index 00000000..d73e0720
--- /dev/null
+++ b/os-plugins/plugins/vmgrid/OpenSLX/OSPlugin/vmgrid.pm
@@ -0,0 +1,322 @@
+# Copyright (c) 2008, 2009 - OpenSLX GmbH
+#
+# This program is free software distributed under the GPL version 2.
+# See http://openslx.org/COPYING
+#
+# If you have any feedback please consult http://openslx.org/feedback and
+# send your suggestions, praise, or complaints to feedback@openslx.org
+#
+# General information about OpenSLX can be found at http://openslx.org/
+# -----------------------------------------------------------------------------
+# vmgrid.pm
+#    - ...
+# -----------------------------------------------------------------------------
+package OpenSLX::OSPlugin::vmgrid;
+
+use strict;
+use warnings;
+
+use base qw(OpenSLX::OSPlugin::Base);
+
+use OpenSLX::Basics;
+use OpenSLX::Utils;
+use OpenSLX::DistroUtils;
+
+sub new
+{
+    my $class = shift;
+
+    my $self = {
+        name => 'vmgrid',
+    };
+
+    return bless $self, $class;
+}
+
+# TODO: desc
+sub getInfo
+{
+    my $self = shift;
+
+    return {
+        description => unshiftHereDoc(<<'        End-of-Here'),
+            ...
+        End-of-Here
+        precedence => 80,
+        #required => [ qr{^(vmware|virtualbox|qemukvm|xen)$} ],
+        #openvz|vserver
+        # TODO: virtaul plugin (requires, provides?)
+        #required => [ qw( virtualization ) ],
+        #provided => [ qw( virtualization ) ],
+    };
+}
+
+sub getAttrInfo
+{
+    my $self = shift;
+
+    return {
+        'vmgrid::active' => {
+            applies_to_systems => 1,
+            applies_to_clients => 1,
+            description => unshiftHereDoc(<<'            End-of-Here'),
+                should the 'vmgrid'-plugin be executed during boot?
+            End-of-Here
+            content_regex => qr{^(0|1)$},
+            content_descr => '1 means active - 0 means inactive',
+            default => '1',
+        },
+        'vmgrid::virt' => {
+            applies_to_systems => 1,
+            applies_to_clients => 1,
+            description => unshiftHereDoc(<<'            End-of-Here'),
+                which virtualization technique schould be used?
+            End-of-Here
+            content_regex => qr{^(vmware|virtualbox|qemukvm|xen)$},
+            #openvz|vserver
+            content_descr => 'vmware, virtualbox, qemukvm, xen',
+            #openvz, vserver
+            default => undef,
+        },
+        'vmgrid::roshare' => {
+            applies_to_systems => 1,
+            applies_to_clients => 1,
+            description => unshiftHereDoc(<<'            End-of-Here'),
+                do you want to mount external resources?
+                e.g. NFS share /w virt images ...
+                will be mounted to /var/lib/virt/vmgrid
+            End-of-Here
+            content_regex => qr{^nfs://},
+            content_descr => 'NFS share as URI (nfs://...)',
+            default => undef,
+        },
+        'vmgrid::rwshare' => {
+            applies_to_systems => 1,
+            applies_to_clients => 1,
+            description => unshiftHereDoc(<<'            End-of-Here'),
+                 do you want a persistent storage device?
+                 use local hard drive (ID45) or NFS share.
+                 will be mounted to /var/opt/openslx/plugins/vmgrid/share
+            End-of-Here
+            content_regex => qr{^(id45|nfs://)},
+            content_descr => 'NFS share as URI (nfs://...) or "id45"',
+            default => undef,
+        },
+        'vmgrid::imgpath' => {
+            applies_to_systems => 1,
+            applies_to_clients => 1,
+            description => unshiftHereDoc(<<'            End-of-Here'),
+                 location of virtual images
+                 for starts /wo full path
+            End-of-Here
+            content_descr => 'absolute path to vm image files',
+            default => '/var/lib/virt/vmgrid/images',
+        },
+        'vmgrid::xmlpath' => {
+            applies_to_systems => 1,
+            applies_to_clients => 1,
+            description => unshiftHereDoc(<<'            End-of-Here'),
+                 location of XML configuration for virtual images
+                 for starts /wo full path
+            End-of-Here
+            content_descr => 'absolute path to vm xml files',
+            default => '/var/lib/virt/vmgrid/xml',
+        },
+        'vmgrid::startvms' => {
+            applies_to_systems => 1,
+            applies_to_clients => 1,
+            description => unshiftHereDoc(<<'            End-of-Here'),
+                 which virtaul machines should be started per default
+                 comma separated list. first will be started first,
+                 second second, and so on, max. 4 VMs
+            End-of-Here
+            content_descr => 'name of xml file e.g. scilin-5.4-wn(.xml)',
+            default => undef,
+        },
+        'vmgrid::hvm' => {
+            applies_to_systems => 1,
+            applies_to_clients => 1,
+            description => unshiftHereDoc(<<'            End-of-Here'),
+                 use hardware virtualization, if applicable
+                 override the settings of the corresponding virt plugin
+                 (only if supported by plugin)
+            End-of-Here
+            content_regex => qr{^(0|1)$},
+            content_descr => '"0", "1" or "-" (for unset)',
+            default => undef,
+        },
+        'vmgrid::maxvcpus' => {
+            applies_to_systems => 1,
+            applies_to_clients => 1,
+            description => unshiftHereDoc(<<'            End-of-Here'),
+                 use this number of vcpus as maximum for one vm
+                 will be used only if applicable
+                 (only if supported by plugin)
+            End-of-Here
+            content_regex => qr{^(1|2|4|8|16)$},
+            content_descr => '1, 2, 4, 8, 16',
+            default => undef,
+        },
+        'vmgrid::minvcpus' => {
+            applies_to_systems => 1,
+            applies_to_clients => 1,
+            description => unshiftHereDoc(<<'            End-of-Here'),
+                 use this number of vcpus as minimum for one vm
+                 will be used only if applicable
+                 (only if supported by plugin)
+            End-of-Here
+            content_regex => qr{^(1|2|4|8|16)$},
+            content_descr => '1, 2, 4, 8, 16',
+            default => undef,
+        },
+        'vmgrid::memratio' => {
+            applies_to_systems => 1,
+            applies_to_clients => 1,
+            description => unshiftHereDoc(<<'            End-of-Here'),
+                 define memory ratio in nn%
+                 order: grid client 1, 2, 3, 4, other VMs, host
+                 if desktop virtualization defined the free memory will be
+                 distributed between the remaining grid clients,
+                 according to their ratio
+                 if less than 4 VMs defined in startvms the memory is being
+                 reserved for a later manual start
+                 set to 0 if you don't intend to start them manually
+                 (only if supported by plugin)
+            End-of-Here
+            content_regex => qr{^(\d\d??,\d\d??,\d\d??,\d\d??,\d\d??,\d\d??)$},
+            content_descr => '\d\d??,\d\d??,\d\d??,\d\d??,\d\d??,\d\d??',
+            default => '40,0,0,0,40,20',
+        },
+        'vmgrid::maxram' => {
+            applies_to_systems => 1,
+            applies_to_clients => 1,
+            description => unshiftHereDoc(<<'            End-of-Here'),
+                 maximum of RAM used for ALL vms
+                 will be used only if applicable
+                 (only if supported by plugin)
+            End-of-Here
+            content_regex => qr{^(1|2|3|4|5|6|7|8|9)},
+            content_descr => 'absolute or relative e.g. 512 or 50%',
+            default => undef,
+        },
+        'vmgrid::minram' => {
+            applies_to_systems => 1,
+           applies_to_clients => 1,
+            description => unshiftHereDoc(<<'            End-of-Here'),
+                 minimum of RAM used for ALL vms
+                 will be used only if applicable
+                 (only if supported by plugin)
+            End-of-Here
+            content_regex => qr{^(1|2|3|4|5|6|7|8|9)},
+            content_descr => 'absolute or relative e.g. 512 or 50%',
+            default => undef,
+        },
+    };
+}
+
+sub installationPhase
+{
+    my $self = shift;
+    my $info = shift;
+
+    my $pluginRepoPath  = $info->{'plugin-repo-path'};
+    my $openslxBasePath = $info->{'openslx-base-path'};
+
+    $self->_writeRunlevelScript();
+
+    # copy all needed files now:
+    my $pluginName = $self->{'name'};
+    my $pluginBasePath = "$openslxBasePath/lib/plugins/$pluginName/files";
+    foreach my $file ( qw( vmgrid run-vmgrid.sh ) ) {
+        copyFile("$pluginBasePath/$file", "$pluginRepoPath/");
+        chmod 0755, "$pluginRepoPath/$file";
+    }
+
+    return;
+}
+
+sub removalPhase
+{
+    my $self = shift;
+    my $info = shift;
+
+    return;
+}
+
+# Write the runlevelscript
+sub _writeRunlevelScript
+{
+    my $self     = shift;
+    my $initfile = newInitFile();
+
+    $initfile->setName("vmgrid-slx");
+    $initfile->setDesc("Setup environment for vmgrid. Part of OpenSLX vmgrid plugin.");
+
+    # todo: Function need to be formated proper... not important right now
+    #$initfile->addFunction(
+    #    'running',
+    #    'lsmod | grep -q "$1[^_-]"'
+    #);
+
+    # Is a VM running?
+    my $runningvms = unshiftHereDoc(<<'    End-of-Here');
+    if [ -e /tmp/vmgrid/vmgrid.pids ]; then
+      for pid in $(cat /tmp/vmgrid/vmgrid.pids); do
+        if ps aux | grep " ${pid} " | grep vmgrid; then
+          echo "Running: ${pid}"
+        fi
+      done
+    fi
+    End-of-Here
+
+    # Kill all VMS!
+    my $killvms = unshiftHereDoc(<<'    End-of-Here');
+    if [ -e /tmp/vmgrid/vmgrid.pids ]; then
+      for pid in $(cat /tmp/vmgrid/vmgrid.pids); do
+        if ps aux | grep " ${pid} " | grep vmgrid; then
+          kill ${pid}
+        fi
+      done
+    fi
+    End-of-Here
+
+    # FORCE: Kill all VMS!
+    my $fkillvms = unshiftHereDoc(<<'    End-of-Here');
+    if [ -e /tmp/vmgrid/vmgrid.pids ]; then
+      for pid in $(cat /tmp/vmgrid/vmgrid.pids); do
+        if ps aux | grep " ${pid} " | grep vmgrid; then
+          kill -9 ${pid}
+        fi
+      done
+    fi
+    End-of-Here
+
+    $initfile->addFunction(
+        'start',
+        '  vmgrid',
+    );
+    $initfile->addToCase(
+        'kill',
+        'killvms'
+    );
+    $initfile->addToCase(
+        'force-kill',
+        'fkillvms'
+    );
+    $initfile->addToCase(
+        'status',
+        'runningvms'
+    );
+    $initfile->addToCase(
+        'restart',
+        'stop && start'
+    );
+
+    # get distro version
+#    my $distro = (split('-',$self->{'os-plugin-engine'}->distroName()))[0];
+#    my $runlevelscript = getInitFileForDistro($initfile, $distro);
+#
+#    spitFile("$self->{'pluginRepositoryPath'}/vmgrid-slx", $runlevelscript);
+}
+
+1;
diff --git a/os-plugins/plugins/vmgrid/XX_vmgrid.sh b/os-plugins/plugins/vmgrid/XX_vmgrid.sh
new file mode 100644
index 00000000..d9e35dfb
--- /dev/null
+++ b/os-plugins/plugins/vmgrid/XX_vmgrid.sh
@@ -0,0 +1,124 @@
+# Copyright (c) 2008..2010 - RZ Uni Freiburg
+# Copyright (c) 2008..2010 - OpenSLX GmbH
+#
+# This program/file is free software distributed under the GPL version 2.
+# See http://openslx.org/COPYING
+#
+# If you have any feedback please consult http://openslx.org/feedback and
+# send your feedback to feedback@openslx.org
+#
+# General information about OpenSLX can be found at http://openslx.org
+#
+# script is included from init via the "." load function - thus it has all
+# variables and functions available
+
+# include default directories
+. /etc/openslx.conf
+
+CONFFILE="/initramfs/plugin-conf/vmgrid.conf"
+PLUGINCONFDIR=/mnt/${OPENSLX_DEFAULT_CONFDIR}/plugins/vmgrid
+VIRTUALIZATIONPLUGIN=/mnt/${OPENSLX_DEFAULT_CONFDIR}/plugins/virtualization
+#RWSHARE=/mnt/${OPENSLX_DEFAULT_VARDIR}/plugins/vmgrid/share
+RWSHARE=/mnt/var/opt/openslx/plugins/vmgrid/share
+RWSHAREMNT=/mnt/var/opt/openslx/mnt/vmgrid
+BINDIR=/mnt/${OPENSLX_DEFAULT_BINDIR}
+PLUGINDIR=${OPENSLX_DEFAULT_DIR}/plugin-repo/vmgrid
+VIRTDIR=/mnt/${OPENSLX_DEFAULT_VIRTDIR}/vmgrid
+
+if [ -f $CONFFILE ]; then
+
+  # load needed variables
+  . $CONFFILE
+
+  if [ $vmgrid_active -ne 0 ] ; then
+    [ $DEBUGLEVEL -gt 0 ] && echo "executing the 'vmgrid' os-plugin ..."
+
+    # load general configuration
+    . /etc/initramfs-setup
+    # include functions
+    . /etc/functions
+
+    testmkd ${PLUGINCONFDIR}
+    testmkd ${VIRTDIR}
+    cp $CONFFILE ${PLUGINCONFDIR}/vmgrid.conf
+    # create link to binpath
+    ln -fs ${PLUGINDIR}/vmgrid ${BINDIR}/vmgrid
+    ln -fs ${PLUGINDIR}/run-vmgrid.sh ${BINDIR}/run-vmgrid.sh
+
+    # mount nfs virt ro share
+    if strinstr "nfs://" "${vmgrid_roshare}"; then
+      virtsrcprot=$(uri_token ${vmgrid_roshare} prot)
+      virtsrcserv=$(uri_token ${vmgrid_roshare} server)
+      virtsrcpath="$(uri_token ${vmgrid_roshare} path)"
+      if [ -n "${virtsrcprot}" -a -n "${virtsrcserv}" -a -n "${virtsrcpath}" ];
+        then
+        virtsrctarget=${VIRTDIR}
+        # mount the vmgrid source ro
+        fsmount ${virtsrcprot} ${virtsrcserv} ${virtsrcpath} ${virtsrctarget} \
+          ro
+      fi
+    fi
+
+    # create rw share
+    testmkd ${RWSHARE}
+    # bind mount id 45 to ${RWSHARE}
+    if strinstr "id45" "${vmgrid_rwshare}" ; then
+      id45part=$(grep " 45 " /etc/disk.partition | awk '{print $1}' | \
+        cut -f 3,3 -d /)
+      if [ -n "${id45part}" ]; then
+        testmkd /mnt/media/${id45part}/vmgrid
+        mount --bind -n /mnt/media/${id45part}/vmgrid ${RWSHARE} \
+          >>/tmp/vmgrid.log 2>&1
+      fi
+    # mount nfs rw share
+    elif strinstr "nfs://" "${vmgrid_rwshare}" ; then
+      rwshareprot=$(uri_token ${vmgrid_rwshare} prot)
+      rwshareserv=$(uri_token ${vmgrid_rwshare} server)
+      rwsharepath="$(uri_token ${vmgrid_rwshare} path)"
+      if [ -n "${rwshareprot}" -a -n "${rwshareserv}" -a -n "${rwsharepath}" ];
+      then
+        # mount to a dir fist to create spec host dir, then bind mount
+        testmkd ${RWSHAREMNT}
+        rwtarget=${RWSHAREMNT}
+        # mount the vmgrid source rw
+        fsmount ${rwshareprot} ${rwshareserv} ${rwsharepath} ${rwtarget} rw
+        # hostname?
+        host_name=${host_name:=$clientip}
+        testmkd ${RWSHAREMNT}/${host_name}
+        mount --bind ${RWSHAREMNT}/${host_name} ${RWSHARE} \
+          >>/tmp/vmgrid.log 2>&1
+      fi
+    else
+      testmkd /mnt/tmp/vmgrid
+      mount --bind -n /mnt/tmp/vmgrid ${RWSHARE} >>/tmp/vmgrid.log 2>&1
+    fi
+    # chmod so that everybody can write
+    chmod 1777 ${RWSHARE}
+    echo "vmgrid_rwmnt=${RWSHARE#/mnt}" >> ${PLUGINCONFDIR}/vmgrid.conf
+
+    # virtual virtualization plugin
+    testmkd ${VIRTUALIZATIONPLUGIN}
+    totalmemtest=$(expr $(echo ${vmgrid_memratio} \
+                  | awk -F ',' '{print $1" + "$2" + "$3" + "$4" + "$5" + "$6}'))
+    totalmem=$(expr $(grep -i "memtotal" /proc/meminfo \
+               | awk '{print $2}') / 1024)
+    if [ ${totalmemtest} -le 100 2>/dev/null ]; then
+      # get hostmem
+      freememper=$(expr 100 - $(echo ${vmgrid_memratio} \
+                   | awk -F ',' '{print $1" - "$2" - "$3" - "$4}'))
+      freemem=$(expr ${totalmem} \* ${freememper} / 100)
+      echo "virt_freemem=${freemem}" \
+        >> ${VIRTUALIZATIONPLUGIN}/virtualization.conf
+    else
+      # more than 100% memory assigned stupid!
+      # vmgrid will get this as well and exit!
+      # so we have theoretically 100% free
+      echo "virt_freemem=${totalmem}" \
+        >> ${VIRTUALIZATIONPLUGIN}/virtualization.conf
+    fi
+
+    # finished ...
+    [ $DEBUGLEVEL -gt 0 ] && echo "done with 'vmgrid' os-plugin ..."
+  fi
+[ $DEBUGLEVEL -gt 0 ] && echo "  * configuration of 'vmgrid' os-plugin failed"
+fi
diff --git a/os-plugins/plugins/vmgrid/files/run-vmgrid.sh b/os-plugins/plugins/vmgrid/files/run-vmgrid.sh
new file mode 100644
index 00000000..626dfcca
--- /dev/null
+++ b/os-plugins/plugins/vmgrid/files/run-vmgrid.sh
@@ -0,0 +1,386 @@
+#!/bin/bash
+# -----------------------------------------------------------------------------
+# Copyright (c) 2007..2010 - RZ Uni FR
+# Copyright (c) 2007..2010 - OpenSLX GmbH
+#
+# This program is free software distributed under the GPL version 2.
+# See http://openslx.org/COPYING
+#
+# If you have any feedback please consult http://openslx.org/feedback and
+# send your suggestions, praise, or complaints to feedback@openslx.org
+#
+# General information about OpenSLX can be found at http://openslx.org/
+# -----------------------------------------------------------------------------
+# vmgrid
+#    - This is the generic wrapper for the several virtualization solutions...
+################################################################################
+
+. /etc/opt/openslx/openslx.conf
+
+################################################################################
+### Define default dirs / get configs
+################################################################################
+
+PLUGINCONFROOT=${OPENSLX_DEFAULT_CONFDIR}/plugins
+PLUGINCONFVMGRID=${PLUGINCONFROOT}/vmgrid
+RWSHARE=/var/opt/openslx/plugins/vmgrid/share
+# include general configuration from vmgrid
+[ -f ${PLUGINCONFVMGRID}/vmgrid.conf ] && \
+  . ${PLUGINCONFVMGRID}/vmgrid.conf
+#[ -f ${PLUGINCONFVMGRID}/vmgrid.include ] && \
+#  . ${PLUGINCONFVMGRID}/vmgrid.include
+# get the vmchooser_active var
+[ -f ${PLUGINCONFROOT}/vmchooser/vmchooser.conf ] && \
+  . ${PLUGINCONFROOT}/vmchooser/vmchooser.conf
+
+################################################################################
+### Functions used throughout the script
+################################################################################
+
+# function to write to stdout and logfile
+writelog () {
+  # write to stdout
+  echo -e "$1"
+  # log into file
+  echo -e "$1" >> ${OPENSLX_DEFAULT_LOGDIR}/run-vmgrid.${USER}.$$.log
+  # log into share dir, so that log is available in vm as well
+  echo -e "$1" >> ${vmgrid_rwmnt}/logs/run-vmgrid.${USER}.$$.log
+}
+
+################################################################################
+### Get XML file and dir
+################################################################################
+
+# check if forcemem or graphical mode set
+headless=1
+while [ $# -gt 0 ]; do
+  case "$1" in
+    -h|--help)
+      echo -e "Usage: run-vmgrid.sh [-g] [--forcemem <memorysize in MB>] \c"
+      echo -e "[/path/]filename[.xml]"
+      exit
+    ;;
+    -g)
+      headless=0
+    ;;
+    --forcemem)
+      forcemem=$2
+      shift
+    ;;
+    *)
+      xmlfile=$@
+      break
+    ;;
+  esac
+  shift
+done
+
+# absolute or relative path?
+if ls ${xmlfile} 2>/dev/null | grep '/' >/dev/null 2>&1; then
+  xmlpath=$(dirname ${xmlfile})
+  xmlfile=$(basename ${xmlfile})
+else
+  xmlpath=${vmgrid_xmlpath}
+fi
+# full path
+xmlfile="${xmlpath}/${xmlfile%.xml}.xml"
+
+################################################################################
+### Sanity checks
+################################################################################
+
+# test if the xml file is valid
+if ! [ -r "${xmlfile}" ]; then
+  writelog "${xmlfile} not a readable XML file!"
+  run-vmgrid.sh -h &
+  exit 1
+fi
+
+# start to log, create shrare log dir
+mkdir -m 1777 -p ${vmgrid_rwmnt}/logs
+echo "Starting to log at $(date)" \
+  >${vmgrid_rwmnt}/logs/run-vmgrid.${USER}.$$.log
+
+# test how many instances running
+runningvms=$(ps aux | grep "run-vmgrid.sh " | grep -v grep | wc -l)
+# 2 steps, /w only one is seems not to work
+runningvms=$(expr ${runningvms} - 1)
+# if Xen use different method
+if [ "${vmgrid_virt}" = "xen" ]; then
+  runningvms=$(xm list 2>/dev/null | grep -vE "Domain-0|Name.*ID" | wc -l)
+  runningvms=$(expr ${runningvms} + 1)
+fi
+# check value
+if [ $runningvms -le 0 ]; then
+  writelog "Error in value: Running VMs: ${runningvms}. Exit!"
+  exit 1
+fi
+# check if vmchooser plugin installed
+if [ -n "${vmchooser_active}" ] && [ ${runningvms} -gt 1 ]; then
+  # only allow one instance of vmgrid
+  writelog "Already 1 VMs running and vmchooser plugin is active."
+  writelog "Can't start ${xmlfile}, exiting!"
+  exit 1
+# else allow max. 4 instances
+elif [ ${runningvms} -gt 4 ]; then
+  writelog "Already 4 VMs running, exiting!"
+  exit 1
+fi
+VM_ID="0${runningvms}"
+
+# test if XML file
+if ! grep '<?xml' "${xmlfile}" >/dev/null 2>&1; then
+  writelog \
+    "Submitted configuration file ${xmlfile} seems to have wrong XML format"
+  exit 1
+fi
+
+################################################################################
+###  Logo for console
+################################################################################
+
+cat <<EOL
+                                                          __     __ 
+         .----.--.--.-----.___.--.--.--------.-----.----.|__|.--|  |
+         |   _|  |  |     |___|  |  |        |  _  |   _||  ||  _  |
+         |__| |_____|__|__|    \___/|__|__|__|___  |__|  |__||_____|
+                                             |_____|                
+         OpenSLX virtual machine environment preparation script ...
+
+EOL
+
+################################################################################
+### Read needed variables from XML file
+################################################################################
+
+writelog "Starting configuration..."
+writelog "\tVM-ID:\t\t\t${VM_ID}"
+writelog "\tLogfile:\t\t${OPENSLX_DEFAULT_LOGDIR}/run-vmgrid.${USER}.$$.log"
+writelog "\t/tmp info:\t\t$(df -h | grep " /tmp$" | awk '{print $2}') \c"
+writelog "$(grep "/tmp " /proc/mounts | awk '{print $1" "$2" "$3" "$4}')"
+writelog "\tVM XML dir:\t\t$(dirname ${xmlfile})"
+
+if ! grep '<?xml' "${xmlfile}" >/dev/null 2>&1; then
+  writelog \
+    "Submitted configuration file ${xmlfile} seems to have wrong XML format"
+  exit 1
+fi
+
+writelog "\tXML file:\t\t$xmlfile"
+writelog "VM config:"
+
+# name of the virt image or dir
+imgname=$(grep -io '<image_name param=.*"' ${xmlfile} \
+          | sed -e "s/&.*;/; /g" | awk -F '"' '{ print $2 }')
+
+# image mode
+imgmode=$(grep -io '<image_mode param=.*"' ${xmlfile} \
+          | sed -e "s/&.*;/; /g" | awk -F '"' '{ print $2 }')
+
+# get boot attr
+boot=$(grep -io 'boot param=.*"' ${xmlfile} | awk -F '"' '{ print $2 }')
+diskless=0
+
+# special rw image
+if [ "${imgmode}" = "rwimg" ]; then
+  # maybe you want to use an empty rw imgae?
+  # define only for writelog, will be set in the plugin include again!
+  vmpath="{special rw image}"
+  # add new path for rwimg
+  imgpath=${vmgrid_rwmnt}/specialrwimages
+  unset $imgname
+  mkdir -m 1777 -p ${imgpath}
+# diskless boot
+elif [ "${boot}" = "n" ] && [ -z "${imgname}" ]; then
+  diskless=1
+  vmpath="{diskless boot}"
+# imagename /w full path
+elif echo ${imgname} 2>/dev/null | grep -q '^/' >/dev/null 2>&1; then
+  imgpath=$(dirname ${imgname})
+  imgname=$(basename ${imgname})
+  vmpath=${imgpath}/${imgname}
+# get path from var
+else
+  imgpath=${vmgrid_imgpath}
+  vmpath=${imgpath}/${imgname}
+fi
+
+# check if virtual machine container file exists, only if not rwimg
+if ! [ -e "${vmpath}" ] && [ "${imgmode}" != "rwimg" ] && [ ${diskless} -eq 0 ];
+then
+  writelog "Virtual machine image or directory ${vmpath} not found!"
+  exit 1
+fi
+
+# name of the virt machine, sed because of Windows formatting
+vm_name=$(grep -o 'short_description param=.*"' ${xmlfile} \
+          | sed -e "s/&.*;/; /g" | awk -F '"' '{print $2}')
+# if ${vm_name} not defined use ${xmlfile}
+vm_name=${vm_name:-${xmlfile%.xml}}
+
+# define vm_shortname since vm_name can be very long
+vm_shortname=$(basename ${xmlfile%.xml} | sed -e "s, ,-,g")
+
+# vm_name = displayname, define for old scripts
+displayname=${vm_name}
+
+[ "${imgmode}" != "rwimg" ] && [ ${diskless} -eq 0 ] \
+  && writelog "\tVM Image dir:\t\t${imgpath}"
+writelog "\tVM file/dir:\t\t$vmpath"
+
+# is there an additional configuration provided?
+additional_config=$(grep -o 'additional_config param=.*"' ${xmlfile} \
+                    | sed -e "s/&.*;/; /g" | awk -F '"' '{print $2}')
+
+# image is for the following virtual machine 
+xmlvirt=$(grep -o 'virtualmachine param=.*"' ${xmlfile} \
+          | sed -e "s/&.*;/; /g" | awk -F '"' '{print $2}')
+
+# make a guess from the filename extension if ${xmlvirt} is empty
+# (not set within the XML file)
+if [ -z "${xmlvirt}" ] && [ -n "${additional_config}" ]; then
+  writelog "No virtual machine parameter defined in ${xmlfile}"
+  writelog "Trying to guess VM...\c"
+  case "$(cat ${additional_config} | tr [A-Z] [a-z])" in
+    *config.version*|*virtualhw.version*|*independent-nonpersistent*|*vmdk*)
+      xmlvirt="vmware"
+    ;;
+    *innotek*|*virtualbox*)
+      xmlvirt="virtualbox"
+    ;;
+    *qemu*|*kvm*)
+      xmlvirt="qemukvm"
+    ;;
+    *)
+      xmlvirt="none"
+    ;;
+  esac
+elif [ -z "${xmlvirt}" ]; then
+  case "$(echo ${imgname##*.} | tr [A-Z] [a-z])" in
+    vmdk)
+      xmlvirt="vmware"
+    ;;
+    vbox)
+      xmlvirt="virtualbox"
+    ;;
+    img|qcow*)
+      xmlvirt="qemukvm"
+    ;;
+    *)
+      xmlvirt="none"
+    ;;
+  esac
+  writelog "result:\t${xmlvirt}"
+fi
+
+# check for virt
+if [ "${vmgrid_virt}" != "${xmlvirt}" ]; then
+  writelog "The virtual machine specified in ${xmlfile}"
+  writelog "does not match the virtualization used here (${vmgrid_virt})"
+  exit 1
+fi
+
+# definition of the client system
+vmostype=$(grep -io '<os param=.*"' ${xmlfile} | awk -F '"' '{ print $2 }')
+
+# definition of the networking the client system is connected to
+network_kind=$(grep -io 'network param=.*"' ${xmlfile} \
+               | awk -F '"' '{ print $2 }')
+network_card=$(grep -io 'netcard param=.*"' ${xmlfile} \
+               | awk -F '"' '{ print $2 }')
+
+writelog "\tVirtualization:\t\t$xmlvirt"
+writelog "\tVM name:\t\t$vm_name"
+writelog "\tVM short name:\t\t$vm_shortname"
+
+###############################################################################
+### Declaration of default variables
+###############################################################################
+
+# TODO: cpu cores
+#vmgrid::maxvcpus
+#vmgrid::minvcpus
+#cpu_cores="${cpu_cores}"
+
+# check for CPU virtualization flags
+#vmgrid::hvm
+
+# get total amount of memory installed in your machine
+totalmem=$(expr $(grep -i "memtotal" /proc/meminfo | awk '{print $2}') / 1024)
+permem=60
+mem=$(expr ${totalmem} / 100 \* ${permem} / 4 \* 4)
+#vmgrid::maxram
+#vmgrid::minram
+
+# configuring ethernet mac address: first 3 bytes are fixed (00:50:56) 
+# 4th byte is the VM-ID
+# last two bytes are taken from the bridge of the host
+# define one MAC per guest
+macguestpart="00:50:56:${VM_ID}"
+machostpart=$($(which ifconfig) br0 | grep br0 | sed -e "s/ //g" \
+              | awk -F ":" '{print $(NF-1)":"$NF}')
+macaddr=$(echo "${macguestpart}:${machostpart}" | tr [a-z] [A-Z])
+
+# ide is expected default, test for the virtual disk image type should
+# be done while creating the runscripts ...
+# TODO: cdrom / floppy?
+ide="TRUE"
+scsi="FALSE"
+hddrv="ide"
+
+# add rw share
+sharepath="${vmgrid_rwmnt}/folders/${vm_shortname}"
+mkdir -p ${sharepath}
+chmod -f 1777 "${vmgrid_rwmnt}/folders"
+sharename="share"
+
+# set hostname: using original hostname and adding string
+hostname="vmgrid${VM_ID}-$(hostname)"
+
+writelog "\tVM Hostname:\t\t$hostname"
+
+################################################################################
+### Setup the rest of the environment and run the configured vm
+################################################################################
+
+# Copy guest configuration (with added information) config.xml to be accessed
+# via virtual floppy
+# TODO: virt-floppy needed?
+
+# Get all virtual machine specific stuff from the respective include file
+# TODO: rename to run-vuirt.include
+if [ -e ${PLUGINCONFROOT}/${vmgrid_virt}/run-virt.include ] ; then
+  writelog "Strating ${vmgrid_virt} specific part ..."
+  self=${vmgrid_virt}
+  . ${PLUGINCONFROOT}/${vmgrid_virt}/run-virt.include
+else
+  writelog "Failed because of missing ${vmgrid_virt} plugin"
+  exit 1
+fi
+
+# start graphical mode
+if [ ${headless} -eq 0 ]; then
+  if [ -z "${VIRTCMD}" ]; then
+    writelog "Grapical mode not available, exiting!"
+    exit 1
+  fi
+  writelog "Starting ${vmgrid_virt} in graphical mode..."
+  ${VIRTCMD} ${VIRTCMDOPTS} 2>/dev/null
+# start headless
+elif [ -n "${VIRTCMDHL}" ]; then
+  writelog "Starting ${vmgrid_virt} in headless mode..."
+  ${VIRTCMDHL} ${VIRTCMDOPTSHL} 2>/dev/null
+else
+  writelog "${vmgrid_virt}: No headless mode defined, exiting!"
+  exit 1
+fi
+
+# remove config dirs when finished
+if echo "${RMDIRS}" 2>/dev/null | grep -q ${vmgrid_virt}; then
+  writelog "${vmgrid_virt} exited. Cleanning up... \c"
+  rm -rf ${RMDIRS} >/dev/null 2>&1
+  writelog "done"
+fi
+
+echo -e "Bye."
+exit 0
diff --git a/os-plugins/plugins/vmgrid/files/vmgrid b/os-plugins/plugins/vmgrid/files/vmgrid
new file mode 100644
index 00000000..b75b5341
--- /dev/null
+++ b/os-plugins/plugins/vmgrid/files/vmgrid
@@ -0,0 +1,208 @@
+#!/bin/bash
+# -----------------------------------------------------------------------------
+# Copyright (c) 2007..2010 - RZ Uni FR
+# Copyright (c) 2007..2010 - OpenSLX GmbH
+#
+# This program is free software distributed under the GPL version 2.
+# See http://openslx.org/COPYING
+#
+# If you have any feedback please consult http://openslx.org/feedback and
+# send your suggestions, praise, or complaints to feedback@openslx.org
+#
+# General information about OpenSLX can be found at http://openslx.org/
+# -----------------------------------------------------------------------------
+# vmgrid
+#    - Script for autostarts defined in vmgrid::startvms
+################################################################################
+
+# include default directories
+. /etc/opt/openslx/openslx.conf
+
+################################################################################
+### Manual Start
+################################################################################
+
+if [ -n "$1" ]; then
+  if [ "$1" = "-h" ] || [ "$1" = "--help" ]; then
+    echo -e "Usage: vmgrid [[-g] [--forcemem <memorysize in MB>] \c"
+    echo -e "[/path/]filename[.xml]]"
+    exit 0
+  else
+    echo "Starting run-vmgrid.sh with options '$@'"
+    run-vmgrid.sh $@ 2>/dev/null
+    exit
+  fi
+fi
+
+################################################################################
+### Define default dirs / get configs
+################################################################################
+
+PLUGINCONFROOT=${OPENSLX_DEFAULT_CONFDIR}/plugins
+PLUGINCONFDIR=${PLUGINCONFROOT}/vmgrid
+RWSHARE=/var/opt/openslx/plugins/vmgrid/share
+# include general configuration from vmgrid
+[ -f ${PLUGINCONFDIR}/vmgrid.conf ] && \
+  . ${PLUGINCONFDIR}/vmgrid.conf
+# get the vmchooser_active var
+[ -f ${PLUGINCONFROOT}/vmchooser/vmchooser.conf ] && \
+  . ${PLUGINCONFROOT}/vmchooser/vmchooser.conf
+
+################################################################################
+### Functions used throughout the script
+################################################################################
+
+# function to write to stdout and logfile
+writelog () {
+  # write to stdout
+  echo -e "$1"
+  # log into file
+  echo -e "$1" >> ${OPENSLX_DEFAULT_LOGDIR}/run-vmgrid.${USER}.$$.log
+  # log into share dir, so that log is available in vm as well
+  echo -e "$1" >> ${vmgrid_rwmnt}/logs/run-vmgrid.${USER}.$$.log
+}
+
+################################################################################
+### Configure VMs for autostart and set RAM
+################################################################################
+
+# start to log, create shrare log dir
+mkdir -m 1777 -p ${vmgrid_rwmnt}/logs
+mkdir -m 1777 -p /tmp/vmgrid
+mkdir -p /tmp/vmgrid/${USER}
+echo "Starting to log at $(date)" \
+  >${vmgrid_rwmnt}/logs/run-vmgrid.${USER}.$$.log
+
+# remove blanks
+vmgrid_memratio=$(echo ${vmgrid_memratio} | sed -e "s, *,,g")
+vmgrid_startvms=$(echo ${vmgrid_startvms} | sed -e "s, *,,g")
+
+# get total amount of memory installed in your machine
+# TODO: stage 3? virtaulization plugin
+totalmem=$(expr $(grep -i "memtotal" /proc/meminfo | awk '{print $2}') / 1024)
+
+# get hostmem
+hostratio=$(echo ${vmgrid_memratio} | awk -F ',' '{print $6}')
+hostmem=$(expr ${totalmem} \* ${hostratio} / 100 2>/dev/null)
+if [ ${hostmem} -lt 256 2>/dev/null ]; then
+  hostmem=256
+  writelog "${hostmem} MB RAM reserved for host"
+fi
+
+# get other vm mem
+if [ -n "${vmchooser_active}" ]; then
+  othervmratio=$(echo ${vmgrid_memratio} | awk -F ',' '{print $5}')
+  othervmmem=$(expr ${totalmem} \* ${othervmratio} / 100 2>/dev/null)
+  if [ ${othervmmem} -lt 512 2>/dev/null ]; then
+    othervmmem=512
+    writelog "${othervmmem} MB RAM reserved for other virtualization solutions"
+  fi
+else
+  othervmratio=0
+  othervmmem=0
+fi
+
+# calculate freemem
+freemem=$(expr ${totalmem} - ${hostmem} - ${othervmmem} 2>/dev/null)
+if [ ${freemem} -lt 512 2>/dev/null ]; then
+  writelog "Not enough free RAM for this plugin, free: ${freemem} MB"
+  exit 1
+fi
+
+# ratio minus other vms and host
+restratio=$(expr 100 - ${hostratio} - ${othervmratio})
+
+# get clients mem ratio
+vmsumratios=0
+for i in {1..4}; do
+  vm[$i]=$(echo ${vmgrid_startvms} | awk -F ',' '{print $1}')
+  # remove ${vm[$i]} from list because of '{print $1}'
+  vmgrid_startvms=$(echo ${vmgrid_startvms} | sed -e "s,${vm[$i]}\,*,,")
+  vmratio[$i]=$(echo ${vmgrid_memratio} | awk -F ',' '{print $1}')
+  # remove ${vmratio[$i]} from list because of '{print $1}'
+  vmgrid_memratio=$(echo ${vmgrid_memratio} | sed -e "s/${vmratio[$i]},*//")
+  vmsumratios=$(expr ${vmsumratios} + ${vmratio[$i]} 2>/dev/null)
+done
+
+# ratio test: 100 - host - other vm + grid ratios
+ratiotest=$(expr 100 - ${restratio} + ${vmsumratios} 2>/dev/null)
+if [ ${ratiotest} -gt 100 ]; then
+  #writelog "you managed to get over 100% in ratio Einstein: ${ratiotest}%"
+  exit 1
+fi
+
+for i in {1..4}; do
+  # calculate vms mem: mem = $freemem * $vmratio/100 * 100/$restratio
+  # multiple of 4
+  vmmem[$i]=$(expr ${freemem} \* ${vmratio[$i]} / ${restratio} / 4 \* 4 \
+    2>/dev/null)
+  if [ -n "${vm[$i]}" ] && [ ${vmmem[$i]} -lt 512 2>/dev/null ]; then
+    writelog "Not enough free RAM for ${vm[$i]} (min. 512 MB), \c"
+    writelog "free: ${vmmem[$i]} MB"
+    unset vm[$i]
+  fi
+done
+
+################################################################################
+### Start the VMs
+################################################################################
+
+# start vms
+for i in {1..4}; do
+  if [ -n "${vm[$i]}" ]; then
+    alreadyrunning=$(ps aux | grep run-vmgrid.sh |  grep -v grep | \
+      grep "${vm[$i]}" | wc -l)
+    if [ ${alreadyrunning} -gt 0 2>/dev/null ]; then
+      writelog "${vm[$i]} already running, skipping!"
+    else
+      writelog "Starting ${vm[$i]} via run-vmgrid.sh with ${vmmem[$i]} MB RAM"
+      run-vmgrid.sh --forcemem ${vmmem[$i]} ${vm[$i]} 2>/dev/null &
+      echo $! > /tmp/vmgrid/${USER}/vmgrid.pids
+      # wait 5 secs for the next vm to start
+      sleep 10
+    fi
+  fi    
+done
+
+exit 0
+
+################################################################################
+### old stuff with xml files
+################################################################################
+#
+#filter_autostart=$(grep -i "active param" ${vmgrid_xmlpath}/*.xml | \
+#  grep -E "true|1" | awk -F ":" '{print $1}')
+#
+## wozu mehrere starten -> siehe cherkasova
+#
+#filter_virt=
+#for i in ${filter_autostart}; do
+#  filter_temp=
+#  filter_temp=$(cat $i | grep -i "virtualmachine param.*${vmgrid_virt}" | \
+#    wc -l)
+#    if [ ${filter_temp} -eq 1 ]; then
+#      filter_virt="${filter_virt} $i"
+#    fi
+#done
+#
+## remove already started ${vmgrid_startvm}
+#filter_virt=$(echo $filter_virt | \
+#  sed -e "s,${vmgrid_xmlpath}/${vmgrid_startvm%.xml}.xml,,g")
+#
+#sort_virt=$(grep 'priority param' ${vmgrid_xmlpath}/*.xml | sort -n | \
+#  awk -F ":" '{print $1}')
+#
+#for i in ${sort_virt}; do
+#  j=$(echo $filter_virt | grep $i | wc -l)
+#  if [ $j -eq 1 ]; then
+#    filter_virt=$(echo $filter_virt | sed -e "s,$i,,g")
+#    vmgrid ${i#${vmgrid_xmlpath}/}
+#  fi
+#done
+#
+## start vms /wo priority
+#for i in ${filter_virt}; do
+#  vmgrid ${i#${vmgrid_xmlpath}/}
+#done
+#
+#exit 0
diff --git a/os-plugins/plugins/xen/files/hvm.include b/os-plugins/plugins/xen/files/hvm.include
new file mode 100644
index 00000000..beb9315a
--- /dev/null
+++ b/os-plugins/plugins/xen/files/hvm.include
@@ -0,0 +1,209 @@
+# This is an machine template for run-virt.include of the Xen plugin.
+# This template was taken from an example in openSUSE 11.2
+# HVM template
+
+cat <<EOF
+#  -*- mode: python; -*-
+#============================================================================
+# Python configuration setup for 'xm create'.
+# This configuration was created through $0 on $(date)
+#============================================================================
+
+import os, re
+
+arch_libdir = 'lib'
+arch = os.uname()[4]
+if os.uname()[0] == 'Linux' and re.search('64', arch):
+    arch_libdir = 'lib64'
+
+#----------------------------------------------------------------------------
+# Kernel image file.
+kernel = "/usr/lib/xen/boot/hvmloader"
+
+# The domain build function. HVM domain uses 'hvm'.
+builder='hvm'
+
+# Initial memory allocation (in megabytes) for the new domain.
+memory = ${mem}
+
+# Shadow pagetable memory for the domain, in MB.
+# If not explicictly set, xend will pick an appropriate value.  
+# Should be at least 2KB per MB of domain memory, plus a few MB per vcpu.
+#shadow_memory = 8
+
+# A name for your domain. All domains must have different names.
+name = "${vm_name}"
+
+#-----------------------------------------------------------------------------
+# The number of cpus guest platform has, default=1
+#vcpus=1
+
+# Enable/disable HVM guest PAE, default=1 (enabled)
+#pae=1
+
+# Enable/disable HVM guest ACPI, default=1 (enabled)
+#acpi=1
+
+# Enable/disable HVM APIC mode, default=1 (enabled)
+# Note that this option is ignored if vcpus > 1
+#apic=1
+
+# Enable/disable extended power management support within HVM guest, i.e., beyond
+# S3, S4, S5 within guest like exposing battery meter.
+# 0 (default option, extended power management support disabled)
+# 1 (pass-through mode; uses pass-through as needed; efficient but limited in scope)
+# 2 (non pass-through mode; extended scope, likely to work on all applicable environment
+#    but comparitively less efficient than pass-through mode)
+# xen_extended_power_mgmt=0
+
+# List of which CPUS this domain is allowed to use, default Xen picks
+#cpus = ""         # leave to Xen to pick
+#cpus = "0"        # all vcpus run on CPU0
+#cpus = "0-3,5,^1" # all vcpus run on cpus 0,2,3,5
+#cpus = ["2", "3"] # VCPU0 runs on CPU2, VCPU1 runs on CPU3
+
+#----------------------------------------------------------------------------
+# Optionally define mac and/or bridge for the network interfaces.
+# Random MACs are assigned if not given.
+#vif = [ 'type=ioemu, mac=00:16:3e:00:00:11, bridge=xenbr0, model=ne2k_pci' ]
+# type=ioemu specify the NIC is an ioemu device not netfront
+#vif = [ 'type=ioemu, bridge=xenbr0' ]
+vif = [ '${xen_vif}' ]
+
+#----------------------------------------------------------------------------
+# Define the disk devices you want the domain to have access to, and
+# what you want them accessible as.
+# Each disk entry is of the form phy:UNAME,DEV,MODE
+# where UNAME is the device, DEV is the device name the domain will see,
+# and MODE is r for read-only, w for read-write.
+#disk = [ 'phy:hda1,hda1,r' ]
+#disk = [ 'file:/var/lib/xen/images/disk.img,ioemu:hda,w', ',hdc:cdrom,r' ]
+disk = [ '${xen_disk}' ]
+
+#----------------------------------------------------------------------------
+# Configure the behaviour when a domain exits.  There are three 'reasons'
+# for a domain to stop: poweroff, reboot, and crash.  For each of these you
+# may specify:
+#   "destroy",        meaning that the domain is cleaned up as normal;
+#   "restart",        meaning that a new domain is started in place of the old
+#                     one;
+#   "preserve",       meaning that no clean-up is done until the domain is
+#                     manually destroyed (using xm destroy, for example); or
+#   "rename-restart", meaning that the old domain is not cleaned up, but is
+#                     renamed and a new domain started in its place.
+# In the event a domain stops due to a crash, you have the additional options:
+#   "coredump-destroy", meaning dump the crashed domain's core and then destroy;
+#   "coredump-restart', meaning dump the crashed domain's core and the restart.
+# The default is
+#   on_poweroff = 'destroy'
+#   on_reboot   = 'restart'
+#   on_crash    = 'restart'
+#on_poweroff = 'destroy'
+#on_reboot   = 'restart'
+#on_crash    = 'restart'
+
+#============================================================================
+# HVM specific
+#============================================================================
+# Device Model to be used
+device_model = '/usr/' + arch_libdir + '/xen/bin/qemu-dm'
+
+#-----------------------------------------------------------------------------
+# boot on floppy (a), hard disk (c), Network (n) or CD-ROM (d) 
+# default: hard disk, cd-rom, floppy
+#boot="cda"
+
+#-----------------------------------------------------------------------------
+#  write to temporary files instead of disk image files
+#snapshot=1
+
+#----------------------------------------------------------------------------
+# enable SDL library for graphics, default = 0
+sdl=0
+
+#----------------------------------------------------------------------------
+# enable OpenGL for texture rendering inside the SDL window, default = 1
+# valid only if sdl is enabled.
+opengl=1
+
+#----------------------------------------------------------------------------
+# enable VNC library for graphics, default = 1
+vnc=1
+
+#----------------------------------------------------------------------------
+# address that should be listened on for the VNC server if vnc is set.
+# default is to use 'vnc-listen' setting from /etc/xen/xend-config.sxp
+#vnclisten="127.0.0.1"
+
+#----------------------------------------------------------------------------
+# set VNC display number, default = domid
+#vncdisplay=1
+
+#----------------------------------------------------------------------------
+# try to find an unused port for the VNC server, default = 1
+#vncunused=1
+
+#----------------------------------------------------------------------------
+# set password for domain's VNC console
+# default is depents on vncpasswd in xend-config.sxp
+vncpasswd=''
+
+#----------------------------------------------------------------------------
+# no graphics, use serial port
+#nographic=0
+
+#----------------------------------------------------------------------------
+# enable stdvga, default = 0 (use cirrus logic device model)
+stdvga=0
+
+#-----------------------------------------------------------------------------
+#   serial port re-direct to pty deivce, /dev/pts/n 
+#   then xm console or minicom can connect
+serial='pty'
+
+
+#-----------------------------------------------------------------------------
+#   Qemu Monitor, default is disable
+#   Use ctrl-alt-2 to connect
+#monitor=1
+
+
+#-----------------------------------------------------------------------------
+#   enable sound card support, [sb16|es1370|all|..,..], default none
+#soundhw='sb16'
+
+
+#-----------------------------------------------------------------------------
+#    set the real time clock to local time [default=0 i.e. set to utc]
+#localtime=1
+
+
+#-----------------------------------------------------------------------------
+#    set the real time clock offset in seconds [default=0 i.e. same as dom0]
+#rtc_timeoffset=3600
+
+#-----------------------------------------------------------------------------
+#    start in full screen
+#full-screen=1   
+
+
+#-----------------------------------------------------------------------------
+#   Enable USB support (specific devices specified at runtime through the
+#			monitor window)
+#usb=1
+#   Enable USB mouse support (only enable one of the following, `mouse' for
+#			      PS/2 protocol relative mouse, `tablet' for
+#			      absolute mouse)
+#usbdevice='mouse'
+#usbdevice='tablet'
+
+#-----------------------------------------------------------------------------
+#   Set keyboard layout, default is en-us keyboard. 
+#keymap='de'
+
+#-----------------------------------------------------------------------------
+#   Enable/disable xen platform PCI device, default=1 (enabled)
+#xen_platform_pci=1
+
+#============================================================================
+EOF
diff --git a/os-plugins/plugins/xen/files/machine.include b/os-plugins/plugins/xen/files/machine.include
new file mode 100644
index 00000000..06848949
--- /dev/null
+++ b/os-plugins/plugins/xen/files/machine.include
@@ -0,0 +1,167 @@
+# This is an machine template for run-virt.include of the Xen plugin.
+# This template was taken from an example in openSUSE 11.2
+
+cat <<EOF
+#  -*- mode: python; -*-
+#============================================================================
+# Python configuration setup for 'xm create'.
+# This configuration was created through $0 on $(date)
+#============================================================================
+
+#----------------------------------------------------------------------------
+# Kernel image file and (optional) ramdisk (initrd).
+kernel = "${xen_kernel}"
+ramdisk = "${xen_ramdisk}"
+
+# Or use domUloader instead of kernel/ramdisk to get kernel from domU FS
+#bootloader = "/usr/lib/xen/boot/domUloader.py"
+#bootentry = "hda1:/${xen_kernel},/${xen_ramdisk}"
+# TODO: check these:
+#bootargs="--entry=xvda2:/boot/vmlinuz-xen,/boot/initrd-xen"
+
+localtime=0
+
+# The domain build function. Default is 'linux', HVM domain uses 'hvm'.
+builder = 'linux'
+
+# Initial memory allocation (in megabytes) for the new domain.
+memory = ${mem}
+
+# A name for your domain. All domains must have different names.
+name = "${vm_name}"
+
+# List of which CPUS this domain is allowed to use, default Xen picks
+#cpus = ""         # leave to Xen to pick
+#cpus = "0"        # all vcpus run on CPU0
+#cpus = "0-3,5,^1" # run on cpus 0,2,3,5
+#cpus = "${xen_cpus}"
+
+# Number of Virtual CPUS to use, default is 1
+#vcpus = ${xen_vcpus}
+
+#----------------------------------------------------------------------------
+# Define network interfaces.
+
+# By default, no network interfaces are configured. You may have one created
+# with sensible defaults using an empty vif clause:
+# vif = [ '' ]
+# or optionally override backend, bridge, ip, mac, script, type, or vifname:
+# vif = [ 'mac=00:16:3e:00:00:11, bridge=xenbr0' ]
+# or more than one interface may be configured:
+# vif = [ '', 'bridge=xenbr1' ]
+vif = [ '${xen_vif}' ]
+
+#----------------------------------------------------------------------------
+# Define the disk devices you want the domain to have access to, and
+# what you want them accessible as.
+# Each disk entry is of the form phy:UNAME,DEV,MODE
+# where UNAME is the device, DEV is the device name the domain will see,
+# and MODE is r for read-only, w for read-write.
+# disk = [ 'phy:hda1,hda1,w' ]
+${xen_disk}
+
+#----------------------------------------------------------------------------
+# Define frame buffer device.
+# By default, no frame buffer device is configured.
+# To create one using the SDL backend and sensible defaults:
+# vfb = [ 'type=sdl' ]
+# This uses environment variables XAUTHORITY and DISPLAY.  You
+# can override that:
+# vfb = [ 'type=sdl,xauthority=/home/bozo/.Xauthority,display=:1' ]
+# To create one using the VNC backend and sensible defaults:
+# vfb = [ 'type=vnc' ]
+# The backend listens on 127.0.0.1 port 5900+N by default, where N is
+# the domain ID.  You can override both address and N:
+# vfb = [ 'type=vnc,vnclisten=127.0.0.1,vncdisplay=1' ]
+# Or you can bind the first unused port above 5900:
+# vfb = [ 'type=vnc,vnclisten=0.0.0.0,vnunused=1' ]
+# You can override the password:
+# vfb = [ 'type=vnc,vncpasswd=MYPASSWD' ]
+# Empty password disables authentication.  Defaults to the vncpasswd
+# configured in xend-config.sxp.
+
+#----------------------------------------------------------------------------
+# Define to which TPM instance the user domain should communicate.
+# The vtpm entry is of the form 'instance=INSTANCE,backend=DOM'
+# where INSTANCE indicates the instance number of the TPM the VM
+# should be talking to and DOM provides the domain where the backend
+# is located.
+# Note that no two virtual machines should try to connect to the same
+# TPM instance. The handling of all TPM instances does require
+# some management effort in so far that VM configration files (and thus
+# a VM) should be associated with a TPM instance throughout the lifetime
+# of the VM / VM configuration file. The instance number must be
+# greater or equal to 1.
+#vtpm = [ 'instance=1,backend=0' ]
+
+#----------------------------------------------------------------------------
+# Set the kernel command line for the new domain.
+# You only need to define the IP parameters and hostname if the domain's
+# IP config doesn't, e.g. in ifcfg-eth0 or via DHCP.
+# You can use 'extra' to set the runlevel and custom environment
+# variables used by custom rc scripts (e.g. VMID=, usr= ).
+
+# Set if you want dhcp to allocate the IP address.
+dhcp="${xen_dhcp}"
+# Set netmask.
+#netmask=
+# Set default gateway.
+#gateway=
+# Set the hostname.
+hostname= "${hostname}"
+
+# Set root device (eg. /dev/hda1).
+root = "${xen_root}"
+
+# Root device for nfs.
+#root = "/dev/nfs"
+# The nfs server.
+#nfs_server = '169.254.1.0'  
+# Root directory on the nfs server.
+#nfs_root   = '/full/path/to/root/directory'
+
+# Extra arguments to pass to the kernel.
+# Eg: set runlevel
+extra = "${xen_extra}"
+
+#----------------------------------------------------------------------------
+# Configure the behaviour when a domain exits.  There are three 'reasons'
+# for a domain to stop: poweroff, reboot, and crash.  For each of these you
+# may specify:
+#   "destroy",        meaning that the domain is cleaned up as normal;
+#   "restart",        meaning that a new domain is started in place of the old
+#                     one;
+#   "preserve",       meaning that no clean-up is done until the domain is
+#                     manually destroyed (using xm destroy, for example); or
+#   "rename-restart", meaning that the old domain is not cleaned up, but is
+#                     renamed and a new domain started in its place.
+# In the event a domain stops due to a crash, you have the additional options:
+#   "coredump-destroy", meaning dump the crashed domain's core and then destroy;
+#   "coredump-restart', meaning dump the crashed domain's core and the restart.
+# The default is
+#   on_poweroff = 'destroy'
+#   on_reboot   = 'restart'
+#   on_crash    = 'restart'
+#on_poweroff = 'destroy'
+#on_reboot   = 'restart'
+#on_crash    = 'restart'
+
+#-----------------------------------------------------------------------------
+#   Configure PVSCSI devices:
+#   PDEV   gives physical SCSI device to be attached to specified guest
+#          domain by one of the following identifier format.
+#          - XX:XX:XX:XX (4-tuples with decimal notation which shows
+#                          "host:channel:target:lun")
+#          - /dev/sdxx or sdx
+#          - /dev/stxx or stx
+#          - /dev/sgxx or sgx
+#          - result of 'scsi_id -gu -s'.
+#            ex. # scsi_id -gu -s /block/sdb
+#                  36000b5d0006a0000006a0257004c0000
+#   VDEV   gives virtual SCSI device by 4-tuples (XX:XX:XX:XX) as 
+#          which the specified guest domain recognize.
+#vscsi = [ 'PDEV, VDEV' ]
+#vscsi = [ '/dev/sdx, 0:0:0:0' ]
+
+#============================================================================
+EOF
diff --git a/os-plugins/plugins/xen/files/run-virt.include b/os-plugins/plugins/xen/files/run-virt.include
new file mode 100644
index 00000000..43213e34
--- /dev/null
+++ b/os-plugins/plugins/xen/files/run-virt.include
@@ -0,0 +1,157 @@
+# run-virt.include
+# -----------------------------------------------------------------------------
+# Copyright (c) 2009..2010 - RZ Uni Freiburg
+# Copyright (c) 2009..2010 - OpenSLX GmbH
+#
+# This program/file is free software distributed under the GPL version 2.
+# See http://openslx.org/COPYING
+#
+# If you have any feedback please consult http://openslx.org/feedback and
+# send your feedback to feedback@openslx.org
+#
+# General information about OpenSLX can be found at http://openslx.org
+# -----------------------------------------------------------------------------
+# run-virt.include
+#    - Include script for running Xen on an OpenSLX client via the run-virt.sh
+#      or run-vmgrid.sh
+################################################################################
+
+################################################################################
+### Include general configuration
+################################################################################
+if [ -f ${OPENSLX_DEFAULT_CONFDIR}/plugins/${self}/${self}.conf ]; then
+  . ${OPENSLX_DEFAULT_CONFDIR}/plugins/${self}/${self}.conf
+else
+  writelog "Problems reading config file of ${self} plugin"
+  exit 1
+fi
+
+################################################################################
+### Declaration of default variables
+################################################################################
+
+PLUGINCONFXEN="${PLUGINCONFROOT}/${self}"
+# create TMPDIR for all users
+mkdir -m 1777 /tmp/${self} 2>/dev/null
+# dir for configs
+confdir="/tmp/${self}/${USER}/${VM_ID}"
+# use vm_shortname for VM name since vm_name can be very long
+# add id so we can start more tahn one of the same image
+vm_name="${vm_shortname}-${VM_ID}"
+conffile=${confdir}/${vm_name}
+# define dirs and files which can be removed after exit, be carefull!
+rm -rf ${confdir} 2>/dev/null
+mkdir -p ${confdir} 2>/dev/null
+
+xen_kernel=${kernel:-"/boot/vmlinuz-xen"}
+xen_ramdisk=${initramfs:-"/boot/initrd-xen"}
+xen_extra="xencons=tty 3"
+[ -n "${imgname}" ] &&  xen_disk="disk = [ 'file:${vmpath},hda1,r' ]"
+
+writelog "Directories:"
+writelog "\tConfig dir:\t\t$confdir"
+
+################################################################################
+### Hardware checks
+################################################################################
+
+# memory part equal to vmware plugin
+# percentage of memory to use for virtualbox in standard case
+if [ -n "${forcemem}" ]; then
+  mem="${forcemem}"
+else
+  permem=30
+  if [ "${totalmem}" -ge "1600" ]; then
+    permem=40
+  fi
+  # check if /tmp is on harddisk
+  if grep -qe "/dev/.* /tmp " /proc/mounts ; then
+    permem=60
+    id44="1"
+    # Hack, if more than 2,5G RAM use 40% of Ram and write vmem into Ram as well
+    # (40% vmware | 40% confdir(vmem...) | 20% host
+    # VMplayer 2+ issue
+    # TODO: makes this sense for vbox?
+    #if [ "${totalmem}" -ge "2500" ]; then
+      #permem=40
+      #rmdir ${snapshotdir}
+      #snapshotdirold=${snapshotdir}
+      #snapshotdir=/dev/shm/${self}/${USER}/${VM_ID}
+      #mkdir -p ${snapshotdir}
+      #ln -sf ${snapshotdir} ${snapshotdirold}
+    #fi
+  fi
+  mem=$(expr ${totalmem} / 100 \* ${permem})
+  if [ "${id44}" = "1" ]; then
+    memhost=$(expr ${totalmem} - ${mem})
+  else
+    memhost=$(expr ${totalmem} - ${mem} - ${mem})
+  fi
+  #permem=40
+  #mem=$(expr ${totalmem} * ${permem})
+  if [ "${mem}" -lt "256" ] || [ "${memhost}" -lt "256" ]; then
+    writelog "Memory out of range: ${mem} MB (guest) / ${memhost} MB (host)!"
+    writelog "Min. 256 MB for host and guest!"
+    exit 1
+  fi
+fi
+
+# translate network kinds (nat, bridged, host-only)
+case "${network_kind}" in
+  bridge*)
+    xen_vif="mac=$macaddr, bridge=br0"
+  ;;
+  *)
+    xen_vif="mac=$macaddr"
+esac
+xen_dhcp="dhcp" # off
+
+# translate boot, use if set else set to disk
+xen_root=/dev/hda1
+case ${boot} in
+  n*|tftp)
+    pxe_label=$(grep -o 'pxe_label param=.*"' ${xmlfile} \
+                | sed -e "s/&.*;/; /g" | awk -F '"' '{print $2}')
+    pxe_label=$(grep -A 3 "^LABEL *${pxe_label}" \
+                ${xen_tftpdir}/pxelinux.cfg/default 2>/dev/null \
+                | grep "^ *KERNEL ")
+    if [ -n "${pxe_label}" ] && [ -n "${xen_tftpdir}" ]; then
+      xen_root=/dev/nfs
+      xen_kernel="${xen_tftpdir}/$(echo ${pxe_label} \
+                  | awk -F " --- " '{print $2}' | awk '{print $1}')"
+      xen_ramdisk="${xen_tftpdir}/$(echo ${pxe_label} \
+                   | awk -F " --- " '{print $3}')"
+    fi
+  ;;
+  # later maybe c|disk|hd*|sd*) for HD and d|cd*) for CD-ROM
+  *)
+    xen_root=/dev/hda1
+  ;;
+esac
+
+[ ${diskless} -eq 0 ] && writelog "Diskimage:"
+[ ${diskless} -eq 0 ] && writelog "\tMachine diskfile:\t$vmpath"
+writelog "Virtual Hardware:"
+writelog "\tGuest RAM:\t\t${mem} MB"
+# echo nur wenn memhost gesetzt
+[ -n "${memhost}" ] && writelog "\tHost RAM:\t\t${memhost} MB"
+writelog "\tMAC address:\t\t$macaddr"
+
+################################################################################
+### Pepare and configure virtual machine and disk image
+################################################################################
+
+. ${PLUGINCONFXEN}/machine.include > ${conffile}
+
+################################################################################
+### finally set env for run-virt.sh
+################################################################################
+
+# set the variables appropriately (several interfaces with different names)
+VIRTCMD=$(which xm 2>/dev/null)
+# '-c' for console, no graphical output available, later vnc possible
+VIRTCMDOPTS="create -c ${conffile}"
+
+# set headless mode
+VIRTCMDHL=$(which xm 2>/dev/null)
+VIRTCMDOPTSHL="create ${conffile}"
diff --git a/os-plugins/plugins/xen/init-hooks/10-have-nw-modules/xennet.sh b/os-plugins/plugins/xen/init-hooks/10-have-nw-modules/xennet.sh
new file mode 100644
index 00000000..d514b68d
--- /dev/null
+++ b/os-plugins/plugins/xen/init-hooks/10-have-nw-modules/xennet.sh
@@ -0,0 +1,4 @@
+# load xennet if necessary, usualy within a NFS VM
+if grep -q "Xen Virtual Ethernet Card" /etc/hwinfo.netcard-usbctrl; then
+  modprobe xennet >/tmp/xennet.log 2>&1
+fi
diff --git a/os-plugins/plugins/xen/init-hooks/20-nw-bridge-config/bridge.sh b/os-plugins/plugins/xen/init-hooks/20-nw-bridge-config/bridge.sh
new file mode 100755
index 00000000..6aabe8ad
--- /dev/null
+++ b/os-plugins/plugins/xen/init-hooks/20-nw-bridge-config/bridge.sh
@@ -0,0 +1,30 @@
+#!/bin/ash
+# Copyright (c) 2009 - OpenSLX GmbH
+#
+# This program is free software distributed under the GPL version 2.
+# See http://openslx.org/COPYING
+#
+# If you have any feedback please consult http://openslx.org/feedback and
+# send your feedback to feedback@openslx.org
+#
+# General information about OpenSLX can be found at http://openslx.org
+#
+# Init hook to create a bridge on the active network interface
+# (should be kept identical to the files of virtualbox and qemukvm plugins)
+#############################################################################
+
+local bridge=br0
+local brnwif=${nwif}
+local nwifmac=${macaddr}
+
+# bridge 0 already defined or some other problem
+brctl addbr ${bridge} || exit 0
+brctl stp ${bridge} 0
+brctl setfd ${bridge} 0.000000000001
+ip link set addr ${nwifmac} ${bridge}
+ip link set dev ${nwif} up
+brctl addif ${bridge} ${nwif}
+
+# fixme: sending back the variable to init does not work properly at the
+# moment
+nwif=${bridge}