diff --git a/deployment/puppet/ceph/manifests/ephemeral.pp b/deployment/puppet/ceph/manifests/ephemeral.pp
index 46b547c2d8..558140388e 100644
--- a/deployment/puppet/ceph/manifests/ephemeral.pp
+++ b/deployment/puppet/ceph/manifests/ephemeral.pp
@@ -15,6 +15,7 @@ class ceph::ephemeral (
   nova_config {
     'DEFAULT/libvirt_images_type':      value => $libvirt_images_type;
     'DEFAULT/libvirt_inject_key':       value => false;
+    'DEFAULT/libvirt_inject_partition': value => '-2';
     'DEFAULT/libvirt_images_rbd_pool':  value => $pool;
     'DEFAULT/live_migration_flag':      value => 'VIR_MIGRATE_UNDEFINE_SOURCE,VIR_MIGRATE_PEER2PEER,VIR_MIGRATE_LIVE,VIR_MIGRATE_PERSIST_DEST';
   }