Python binding for libvirt does not support conn.changeBegin() and conn.commit(). To make the change safe, this procedure was changed to a internal framework: RollbackContext.:wq! Signed-off-by: Ramon Medeiros <ramonn(a)linux.vnet.ibm.com&gt; --- src/kimchi/model.py | 21 +++++++++++---------- 1 file changed, 11 insertions(+), 10 deletions(-) diff --git a/src/kimchi/model.py b/src/kimchi/model.py index 81c1507..e36b485 100644 --- a/src/kimchi/model.py +++ b/src/kimchi/model.py @@ -951,16 +951,17 @@ class Model(object): br_xml = networkxml.create_vlan_tagged_bridge_xml(br_name, interface, vlan_id) conn = self.conn.get() - conn.changeBegin() - try: - vlan_tagged_br = conn.interfaceDefineXML(br_xml) - vlan_tagged_br.create() - except libvirt.libvirtError as e: - conn.changeRollback() - raise OperationFailed(e.message) - else: - conn.changeCommit() - return br_name + + with RollbackContext() as rollback: + + try: + vlan_tagged_br = conn.interfaceDefineXML(br_xml) + vlan_tagged_br.create() + except libvirt.libvirtError as e: + rollback.prependDefer(vlan_tagged_br.destroy) + raise OperationFailed(e.message) + else: + return br_name def _remove_vlan_tagged_bridge(self, network): try: -- 1.8.3.1