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[Vadim Ponomarev <1933813@xxxxxxxxxxxxxxxxxx>]

** Changed in: neutron
       Status: Incomplete => Invalid

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https://bugs.launchpad.net/bugs/1933813

Title:
  OSError: Premature eof waiting for privileged process error in Ussuri
  release of Neutron

Status in neutron:
  Invalid

Bug description:
  After updating Neutron from Queens to Ussuri we started getting the
  errors "OSError: Premature eof waiting for privileged process" for all
  of neutron agents and for different operations (create network,
  enable/disable dhcp etc.). All errors raises inside librari
  oslo.privsep which was updated from version 1.27.0 to 2.1.2 [1]. This
  problem is floating and very difficult to debug, it is impossible to
  understand what exactly is happening. The problem is consistently
  reproduced by tempest tests in our infrastructure.

  Environment:
  Neutron Ussuri, ML2 plugin + linux-bridge + custom agent HPB.

  The examples of tracebacks: http://paste.openstack.org/show/807020/
  (amotoki - paste.openstack.org is easier to read compared to launchpad description, so I moved the example traceback to paste.openstack.org.)

  [1] https://github.com/openstack/oslo.privsep/compare/1.27.0...2.1.2

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