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-rw-r--r--nova/exception.py4
1 files changed, 4 insertions, 0 deletions
diff --git a/nova/exception.py b/nova/exception.py
index 4e2bbdbaf..5fa7fb56e 100644
--- a/nova/exception.py
+++ b/nova/exception.py
@@ -96,6 +96,10 @@ class TimeoutException(Error):
pass
+class BuildInProgress(Error):
+ pass
+
+
class DBError(Error):
"""Wraps an implementation specific exception"""
def __init__(self, inner_exception):