+def call_blockdev_grow(node, cf_bdev, amount):
+ """Request a snapshot of the given block device.
+
+ This is a single-node call.
+
+ """
+ c = Client("blockdev_grow", [cf_bdev.ToDict(), amount])
+ c.connect(node)
+ c.run()
+ return c.getresult().get(node, False)
+
+