MultiSnap: Add support for new API

Create snapshots of multiple resources in one API

Author: ghernadi

linstor-common

@@ -3203,6 +3203,35 @@ def snapshot_create(self, node_names, rsc_name, snapshot_name, async_msg=False):
             body
         )
 
+    def snapshot_create_multi(self, node_names, rsc_names, snapshot_name):
+        """
+        Create a snapshot.
+
+        :param list[str] node_names: Names of the nodes, if empty or None snapshot will be created on all nodes.
+        :param list[str] rsc_names: Name of the resources.
+        :param str snapshot_name: Name of the new snapshot.
+        :return: A list containing ApiCallResponses from the controller.
+        :rtype: list[ApiCallResponse]
+        """
+        self._require_version("1.18.0")
+
+        snapshots = []
+        for rsc_name in rsc_names:
+            snap = {"name": snapshot_name, "resource_name": rsc_name}
+            if node_names:
+                snap["nodes"] = node_names
+            snapshots.append(snap)
+
+        body = {
+            "snapshots": snapshots
+        }
+
+        return self._rest_request(
+            apiconsts.API_CRT_SNAPSHOT_MULTI,
+            "POST", "/v1/actions/snapshot/multi",
+            body
+        )
+
     def snapshot_volume_definition_restore(self, from_resource, from_snapshot, to_resource):
         """
         Create volume definitions from a snapshot.

linstor/linstorapi.py

@@ -68,6 +68,7 @@ class Volume(object):
 
     :param size: String parsable by linstor.SizeCalc or size in bytes.
     """
+
     def __init__(self, size):
         # external properties
         self._size = self._size_to_bytes(size)