Unexpected downtime duration during FFU 16.2 > 17.1.4 TIS

Solution In Progress - Updated -

Issue

  • We faced an issue during FFU upgrade, clients were not able to connect to their external IPs.

  • During the OVN restart we expected an impact but we believe that more than 50 mins was not expected. Please help to understand the root cause. How we can prevent it in the upcoming upgrades?

Environment

  • Red Hat OpenStack Platform 17.1 (RHOSP)
  • Red Hat OpenStack Platform 16.2 (RHOSP)

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