using LVM (systemdisk) in kiwi builds breaks

The title says it all, using the <systemdisk> directive breaks the build.
The important part of the logfile is:

  578s] Jun-11 12:00:21 <1> : --> Creating logical volumes
  578s] Jun-11 12:00:21 <1> : EXEC [pidof systemd-udevd udevd 2>&1]
  578s] Jun-11 12:00:21 <1> : EXEC [lvcreate --noudevsync -L 74 -n LVvar kiwiVG 2>&1]
  578s] Jun-11 12:00:21 <3> : Logical volume(s) setup failed:   /run/lvm/lvmetad.socket: connect failed: No such file or directory
  578s]   WARNING: Failed to connect to lvmetad. Falling back to internal scanning.
  578s]   Found duplicate PV qfYTJCzGCsZVhnJTONDEr3oaGd31Ofy3: using /dev/mapper/loop0p2 not /dev/loop0p2
  578s]   Using duplicate PV /dev/mapper/loop0p2 from subsystem DM, ignoring /dev/loop0p2
  578s]   Rounding up size to full physical extent 76.00 MiB
  578s]   /dev/kiwiVG/LVvar: not found: device not cleared
  578s]   Aborting. Failed to wipe start of new LV.

My config.kiwi is:


<?xml version='1.0' encoding='UTF-8'?>
<image name='Appliance_2.2.0' displayname='Appliance_2.2.0' schemaversion='5.2'>
  <description type='system'>
    <author>Benjamin Schieder</author>
    <contact>me@mail</contact>
    <specification>SLES 12</specification>
  </description>
  <preferences>
    <type checkprebuilt='true' boot='oemboot/suse-SLES12' fsnocheck='true' filesystem='ext3' bootloader='grub2'
          kernelcmdline='quiet' fsmountoptions='acl' image='oem' installboot='install' installiso='true'>
      <oemconfig>
        <oem-swap>true</oem-swap>
        <oem-swapsize>4096</oem-swapsize>
        <!-- <oem-systemsize>15G</oem-systemsize> -->
        <oem-boot-title>Appliance 2.2.0</oem-boot-title>
        <oem-skip-verify>true</oem-skip-verify>
      </oemconfig>
      <systemdisk>
        <volume name="@root" size="15G" />
        <volume name="/var" size="10G" />
      </systemdisk>
      <size unit="G">30</size>

    </type>
    <version>2.2.0</version>
    <packagemanager>zypper</packagemanager>
    <rpm-check-signatures>false</rpm-check-signatures>
    <rpm-force>false</rpm-force>
    <boot-theme>studio</boot-theme>
    <timezone>Europe/Berlin</timezone>
    <locale>en_US</locale>
    <hwclock>localtime</hwclock>
  </preferences>
  <users group='root'>
    <user name='root' pwd='...' home='/root' shell='/bin/bash'/>
  </users>
  <packages type='image' patternType='onlyRequired'>
    <archive name='plymouth.tar' bootinclude='true' />
    <package name='apache2' />
    <package name='apache2-doc' />
    <package name='apache2-utils' />
    <package name='ca-certificates' />
    <package name='cracklib-dict-full' />
    <package name='dracut' />
    <package name='filesystem' />
    <package name='fontconfig' />
    <package name='fonts-config' />
    <package name='gcc-32bit' />
    <package name='gcc-c++-32bit' />
    <package name='gconf2' />
    <package name='gfxboot-devel' arch='x86_64' bootinclude='true' />
    <package name='git' />
    <package name='git-svn' />
    <package name='glibc-32bit' />
    <package name='glibc-locale' />
    <package name='grub2' />
    <package name='iproute2' />
    <package name='iputils' />
    <package name='java-1_8_0-openjdk' />
    <package name='java-1_8_0-openjdk-devel' />
    <package name='kernel-default' />
    <package name='less' />
    <package name='libX11-xcb1-32bit' />
    <package name='libXi6-32bit' />
    <package name='libXinerama1-32bit' />
    <package name='libXrender1-32bit' />
    <package name='libXtst6' />
    <package name='libXtst6-32bit' />
    <package name='lvm2' />
    <package name='man-pages' />
    <package name='man-pages-posix' />
    <package name='net-snmp' />
    <package name='net-tools' />
    <package name='ntp' />
    <package name='openssh' />
    <package name='parted' />
    <package name='patterns-sles-Minimal' />
    <package name='patterns-sles-32bit' />
    <package name='patterns-sles-base' />
    <package name='patterns-sles-x11' />
    <package name='plymouth' />
    <package name='python-pyOpenSSL' />
    <package name='rsync' />
    <package name='rsyslog-module-gtls' />
    <package name='screen' />
    <package name='sles-release' />
    <package name='spacewalk-check' />
    <package name='spacewalk-client-setup' />
    <package name='spacewalk-client-tools' />
    <package name='suse-build-key' />
    <package name='SuSEfirewall2' />
    <package name='syslinux' arch='x86_64' />
    <package name='syslog-service' />
    <package name='systemd' />
    <package name='systemd-sysvinit' />
    <package name='tar' />
    <package name='timezone' />
    <package name='udev' />
    <package name='vim' />
    <package name='vim-data' />
    <package name='wicked' />
    <package name='xdg-utils' />
    <package name='xinit' />
    <package name='yast2' />
    <package name='yast2-firstboot' />
    <package name='zypper' />
    <package name='zypp-plugin-spacewalk' />
  </packages>
  <packages type='bootstrap'>
    <package name='filesystem'/>
    <package name='glibc-locale'/>
    <package name='lvm'/>
    <package name='module-init-tools'/>
    <package name='sles-release'/>
    <package name='sles-release-POOL'/>
  </packages>

  <!-- Use the repositories from images repository-->
  <repository type='rpm-md'>
    <source path='obsrepositories:/'/>
  </repository>
  <repository type="rpm-md">
    <source path="obs://systemsmanagement:spacewalk/SLE_12_SP3" />
  </repository>
</image>

Can someone help me with this?