[Bug 1823282] Re: optimize reload of openvswitch-switch

[James Page]

I can optimise the 'reload' capabilities of the systemd units, however
its not possible to use those as part of the debhelper generated systemd
management code; using reload rather than restart appears to be an
inflight feature in Debian:

https://salsa.debian.org/debian/debhelper/merge_requests/14

https://salsa.debian.org/debian/init-system-helpers/merge_requests/5

** Summary changed:

- optimize reload of openvswitch-switch
+ optimize reload/restart of openvswitch-switch

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https://bugs.launchpad.net/bugs/1823282

Title:
  optimize reload/restart of openvswitch-switch

Status in openvswitch package in Ubuntu:
  In Progress

Bug description:
  A reload of openvswitch-switch is particularly disruptive to existing
  network flows resulting an a 10 second or so pause while the datapath
  rebuilds.

  Its possible todo a more optimized flow save/restore and orchestrated
  restart of the ovs daemons to minimise and disruption to a second or
  two at most.

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