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-rw-r--r--openstackclient/tests/unit/volume/v2/test_volume.py2
-rw-r--r--openstackclient/volume/v2/volume.py16
2 files changed, 14 insertions, 4 deletions
diff --git a/openstackclient/tests/unit/volume/v2/test_volume.py b/openstackclient/tests/unit/volume/v2/test_volume.py
index 2fa924b8..304aa91c 100644
--- a/openstackclient/tests/unit/volume/v2/test_volume.py
+++ b/openstackclient/tests/unit/volume/v2/test_volume.py
@@ -430,7 +430,7 @@ class TestVolumeCreate(TestVolume):
columns, data = self.cmd.take_action(parsed_args)
self.volumes_mock.create.assert_called_once_with(
- size=None,
+ size=snapshot.size,
snapshot_id=snapshot.id,
name=self.new_volume.name,
description=None,
diff --git a/openstackclient/volume/v2/volume.py b/openstackclient/volume/v2/volume.py
index 61f846b0..ee3d2f20 100644
--- a/openstackclient/volume/v2/volume.py
+++ b/openstackclient/volume/v2/volume.py
@@ -186,11 +186,21 @@ class CreateVolume(command.ShowOne):
image_client.images,
parsed_args.image).id
+ size = parsed_args.size
+
snapshot = None
if parsed_args.snapshot:
- snapshot = utils.find_resource(
+ snapshot_obj = utils.find_resource(
volume_client.volume_snapshots,
- parsed_args.snapshot).id
+ parsed_args.snapshot)
+ snapshot = snapshot_obj.id
+ # Cinder requires a value for size when creating a volume
+ # even if creating from a snapshot. Cinder will create the
+ # volume with at least the same size as the snapshot anyway,
+ # so since we have the object here, just override the size
+ # value if it's either not given or is smaller than the
+ # snapshot size.
+ size = max(size or 0, snapshot_obj.size)
project = None
if parsed_args.project:
@@ -205,7 +215,7 @@ class CreateVolume(command.ShowOne):
parsed_args.user).id
volume = volume_client.volumes.create(
- size=parsed_args.size,
+ size=size,
snapshot_id=snapshot,
name=parsed_args.name,
description=parsed_args.description,