[Bug 1783184] Re: neutron-ovs-cleanup can have unintended side effects

[Corey Bryant]

Agreed it is dangerous to restart neutron-ovs-cleanup. It's meant to run
at

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https://bugs.launchpad.net/bugs/1783184

Title:
  neutron-ovs-cleanup can have unintended side effects

Status in neutron package in Ubuntu:
  Triaged

Bug description:
  neutron-ovs-cleanup is dangerous (i.e. breaks networking of random
  instances) to run at random times but this is not at all obvious from
  looking at the file.  This is a problem because operators tend to
  assume restarting ${service}* is safe (at least from unintended side
  effects), but that's not the case with 'neutron*'.

  Please:

   a) add some obvious and visible documentation to the file that
      neutron-ovs-cleanup should only be restarted after
      openvswitch-switch has been and what might happen if it isn't.

  and/or

   b) add some sort of sanity check that the openvswitch-switch process'
      start time is recent and becoming a noisy no-op if it's not.

  and/or

   c) consider renaming the init script(s) to something that doesn't
      match 'neutron*'

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