[Bug 1752838] Re: [SRU] sometimes neutron-ovs-cleanup runs earlier than ovsdb-server

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** Tags added: patch

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https://bugs.launchpad.net/bugs/1752838

Title:
  [SRU] sometimes neutron-ovs-cleanup runs earlier than ovsdb-server

Status in neutron package in Ubuntu:
  New

Bug description:
  [Impact]

  neutron-ovs-cleanup service runs earlier than ovsdb-server sometimes.

  then, neutron-ovs-cleanup service's status remains failed
  with below error msg

  "ProcessExecutionError: Exit code: 1; Stdin: ; Stdout: ; Stderr: ovs-
  vsctl: unix:/var/run/openvswitch/db.sock: database connection failed
  (No such file or directory)"

  that is fine for booting.

  but.

  If someday upgrade pkgs related to neutron, it runs neutron-ovs-
  cleanup again because it is not in active status.

  eventually, neutron-ovs-cleanup deletes all ports on running compute
  nodes.

  related logs here https://paste.ubuntu.com/p/QkkwP2vPDv/

  [Test Case]
  TBD

  [Regression]
  Changes dependency on debian/neutron-openvswitch-agent.neutron-ovs-cleanup.service.in
  need to reboot if this patch is affected. If this symptom is not affected your env. no need to reboot.

  [Others]
  Because there is no reproducer, please consider this dependency changes if it is proper.

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