volume/api: introduce create_snapshot_force()

Introduce create_snapshot_force() which create snapshot even when
the volume is in in-use. This is needed for CreateImage with no_reboot=true.

1 files changed, 11 insertions, 2 deletions

diff --git a/nova/volume/api.py b/nova/volume/api.py
index 7d27abff9..cfc274c77 100644
--- a/nova/volume/api.py
+++ b/nova/volume/api.py
@@ -140,9 +140,10 @@ class API(base.Base):
                  {"method": "remove_volume",
                   "args": {'volume_id': volume_id}})
 
-    def create_snapshot(self, context, volume_id, name, description):
+    def _create_snapshot(self, context, volume_id, name, description,
+                         force=False):
         volume = self.get(context, volume_id)
-        if volume['status'] != "available":
+        if ((not force) and (volume['status'] != "available")):
             raise exception.ApiError(_("Volume status must be available"))
 
         options = {
@@ -164,6 +165,14 @@ class API(base.Base):
                            "snapshot_id": snapshot['id']}})
         return snapshot
 
+    def create_snapshot(self, context, volume_id, name, description):
+        return self._create_snapshot(context, volume_id, name, description,
+                                     False)
+
+    def create_snapshot_force(self, context, volume_id, name, description):
+        return self._create_snapshot(context, volume_id, name, description,
+                                     True)
+
     def delete_snapshot(self, context, snapshot_id):
         snapshot = self.get_snapshot(context, snapshot_id)
         if snapshot['status'] != "available":