Github user rhtyd commented on the pull request:
https://github.com/apache/cloudstack/pull/1408#issuecomment-216304156
@swill I've validated the lock logic in a gist above, I've tested the
elusiveness of critical code that runs when a lock is acquired; security groups
is implemented using ebtables (rules on bridges) therefore this script is run
at hypervisor host (kvm in this case, by the agent) -- the changes ensure that
no two executions of this script are allowed at the same time
as for prod testing, @wido can you comment on testing the changes in this
PR, thanks
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