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-rw-r--r--nova/exception.py7
1 files changed, 7 insertions, 0 deletions
diff --git a/nova/exception.py b/nova/exception.py
index a9afe37a7..439891153 100644
--- a/nova/exception.py
+++ b/nova/exception.py
@@ -1196,3 +1196,10 @@ class BuildAbortException(NovaException):
class RescheduledException(NovaException):
message = _("Build of instance %(instance_uuid)s was re-scheduled: "
"%(reason)s")
+
+
+class InstanceFaultRollback(NovaException):
+ def __init__(self, inner_exception=None):
+ message = _("Instance rollback performed due to: %s")
+ self.inner_exception = inner_exception
+ super(InstanceFaultRollback, self).__init__(message % inner_exception)