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[Bug 1228827] Re: add request timeout handling for Mellanox Neutron Agent

To: yahoo-eng-team@xxxxxxxxxxxxxxxxxxx
From: Alan Pevec <1228827@xxxxxxxxxxxxxxxxxx>
Date: Mon, 22 Sep 2014 22:34:12 -0000
Reply-to: Bug 1228827 <1228827@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx

** Changed in: neutron/havana
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/1228827

Title:
  add request timeout handling for Mellanox Neutron Agent

Status in OpenStack Neutron (virtual network service):
  Fix Released
Status in neutron havana series:
  Fix Released

Bug description:
  Mellanox Neutron Agent communicates with eswitchd to execute vports discovery and configuration.
  In case eswitchd is not reachable, request timeout is received. The current handling of the timeout was to mark out of sync flag, flush the agent cache and try again. This behavior leads to miss the removed vports and their configuration is not removed. The request timeout was received in case group of VMs was removed at once. The solution is to add number of retries with increasing waiting time in case  request timeout is received. If request timeout persists, exit the agent process.

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