Github user jburwell commented on the issue: https://github.com/apache/cloudstack/pull/1710 @ustcweizhou @ozhanrk this feels like a relatively narrow case (RBD on KVM), and we are extremely late for 4.9.1.0. We have numerous "small" fixes that could be included that would further delay significant fixes that affect nearly users. I am sorry, but this fix will have to wait until 4.9.2.0/4.10.1.0/4.11.0.0.
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