libvirt_wrapper: Add a simple helper to create a transient 'dir' pool

The idea behind this trivial helper was inspired by virt-manager and in
essence should allow us to fetch data about a backing store volume
using libvirt which we'd otherwise have to do ourselves. The pool is
supposed to be destroyed by the caller when the backing store volume is
processed.

Signed-off-by: Erik Skultety <eskultet@redhat.com>

1 files changed, 17 insertions, 0 deletions

diff --git a/lcitool/libvirt_wrapper.py b/lcitool/libvirt_wrapper.py
index 7f1eda7..7db954e 100644
--- a/lcitool/libvirt_wrapper.py
+++ b/lcitool/libvirt_wrapper.py
@@ -159,6 +159,23 @@ class LibvirtStoragePoolObject(LibvirtAbstractObject):
         if volobj:
             return LibvirtStorageVolObject(self, volobj)
 
+    @staticmethod
+    def _create_transient_pool(conn, name, target):
+        """Creates a transient pool of type 'dir'"""
+
+        pool_xml = textwrap.dedent(
+            f"""
+            <pool type='dir'>
+              <name>{name}</name>
+              <target>
+                <path>{target}</path>
+              </target>
+            </pool>
+            """)
+
+        conn.storagePoolCreateXML(pool_xml)
+        return conn.storagePoolLookupByName(name)
+
     def create_volume(self, name, capacity, allocation=None, _format="qcow2",
                       units='bytes', owner=None, group=None, mode=None,):