[Bug 1863021] Fix proposed to networking-bagpipe (stable/ussuri)

OpenStack Infra 1863021 at bugs.launchpad.net
Thu May 7 09:42:46 UTC 2020


Fix proposed to branch: stable/ussuri
Review: https://review.opendev.org/726073

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https://bugs.launchpad.net/bugs/1863021

Title:
  [SRU] eventlet monkey patch results in assert len(_active) == 1
  AssertionError

Status in Cinder:
  Fix Released
Status in Designate:
  In Progress
Status in Glance:
  Fix Released
Status in OpenStack Shared File Systems Service (Manila):
  In Progress
Status in masakari:
  In Progress
Status in Mistral:
  In Progress
Status in Murano:
  Fix Released
Status in BaGPipe:
  Fix Released
Status in networking-hyperv:
  In Progress
Status in networking-l2gw:
  Fix Released
Status in Mellanox backend  integration with Neutron (networking-mlnx):
  In Progress
Status in networking-sfc:
  Fix Released
Status in neutron:
  Fix Released
Status in OpenStack Compute (nova):
  Fix Released
Status in oslo.service:
  Fix Released
Status in senlin:
  In Progress
Status in OpenStack Object Storage (swift):
  In Progress
Status in OpenStack DBaaS (Trove):
  In Progress
Status in watcher:
  In Progress
Status in barbican package in Ubuntu:
  Triaged
Status in cinder package in Ubuntu:
  Fix Released
Status in designate package in Ubuntu:
  Triaged
Status in glance package in Ubuntu:
  Fix Released
Status in heat package in Ubuntu:
  Triaged
Status in ironic package in Ubuntu:
  Triaged
Status in ironic-inspector package in Ubuntu:
  Triaged
Status in magnum package in Ubuntu:
  Triaged
Status in manila package in Ubuntu:
  Triaged
Status in masakari package in Ubuntu:
  Triaged
Status in mistral package in Ubuntu:
  Triaged
Status in murano package in Ubuntu:
  Triaged
Status in murano-agent package in Ubuntu:
  Triaged
Status in networking-bagpipe package in Ubuntu:
  Triaged
Status in networking-hyperv package in Ubuntu:
  Triaged
Status in networking-l2gw package in Ubuntu:
  Triaged
Status in networking-mlnx package in Ubuntu:
  Triaged
Status in networking-sfc package in Ubuntu:
  Triaged
Status in neutron package in Ubuntu:
  Fix Released
Status in neutron-dynamic-routing package in Ubuntu:
  Triaged
Status in nova package in Ubuntu:
  Fix Released
Status in openstack-trove package in Ubuntu:
  Triaged
Status in python-os-ken package in Ubuntu:
  New
Status in python-oslo.service package in Ubuntu:
  Triaged
Status in sahara package in Ubuntu:
  Triaged
Status in senlin package in Ubuntu:
  Triaged
Status in swift package in Ubuntu:
  Triaged
Status in watcher package in Ubuntu:
  New
Status in barbican source package in Focal:
  Triaged
Status in cinder source package in Focal:
  Triaged
Status in designate source package in Focal:
  Triaged
Status in glance source package in Focal:
  Fix Released
Status in heat source package in Focal:
  Triaged
Status in ironic source package in Focal:
  Triaged
Status in ironic-inspector source package in Focal:
  Triaged
Status in magnum source package in Focal:
  Triaged
Status in manila source package in Focal:
  Triaged
Status in masakari source package in Focal:
  Triaged
Status in mistral source package in Focal:
  Triaged
Status in murano source package in Focal:
  Triaged
Status in murano-agent source package in Focal:
  Triaged
Status in networking-bagpipe source package in Focal:
  Triaged
Status in networking-hyperv source package in Focal:
  Triaged
Status in networking-l2gw source package in Focal:
  Triaged
Status in networking-mlnx source package in Focal:
  Triaged
Status in networking-sfc source package in Focal:
  Triaged
Status in neutron source package in Focal:
  Triaged
Status in neutron-dynamic-routing source package in Focal:
  Triaged
Status in nova source package in Focal:
  Fix Released
Status in openstack-trove source package in Focal:
  Triaged
Status in python-os-ken source package in Focal:
  New
Status in python-oslo.service source package in Focal:
  Triaged
Status in sahara source package in Focal:
  Triaged
Status in senlin source package in Focal:
  Triaged
Status in swift source package in Focal:
  Triaged
Status in watcher source package in Focal:
  New
Status in barbican source package in Groovy:
  Triaged
Status in cinder source package in Groovy:
  Fix Released
Status in designate source package in Groovy:
  Triaged
Status in glance source package in Groovy:
  Fix Released
Status in heat source package in Groovy:
  Triaged
Status in ironic source package in Groovy:
  Triaged
Status in ironic-inspector source package in Groovy:
  Triaged
Status in magnum source package in Groovy:
  Triaged
Status in manila source package in Groovy:
  Triaged
Status in masakari source package in Groovy:
  Triaged
Status in mistral source package in Groovy:
  Triaged
Status in murano source package in Groovy:
  Triaged
Status in murano-agent source package in Groovy:
  Triaged
Status in networking-bagpipe source package in Groovy:
  Triaged
Status in networking-hyperv source package in Groovy:
  Triaged
Status in networking-l2gw source package in Groovy:
  Triaged
Status in networking-mlnx source package in Groovy:
  Triaged
Status in networking-sfc source package in Groovy:
  Triaged
Status in neutron source package in Groovy:
  Fix Released
Status in neutron-dynamic-routing source package in Groovy:
  Triaged
Status in nova source package in Groovy:
  Fix Released
Status in openstack-trove source package in Groovy:
  Triaged
Status in python-os-ken source package in Groovy:
  New
Status in python-oslo.service source package in Groovy:
  Triaged
Status in sahara source package in Groovy:
  Triaged
Status in senlin source package in Groovy:
  Triaged
Status in swift source package in Groovy:
  Triaged
Status in watcher source package in Groovy:
  New

Bug description:
  [Impact]
  This appears to be the same issue documented here: https://github.com/eventlet/eventlet/issues/592

  However I seem to only hit this with python3.8. Basically nova,
  glance, neutron, and cinder services fail with:

   Exception ignored in: <function _after_fork at 0x7f1100d075e0>
   Traceback (most recent call last):
     File "/usr/lib/python3.8/threading.py", line 1454, in _after_fork
       assert len(_active) == 1
   AssertionError:
   Exception ignored in: <function _after_fork at 0x7f1100d075e0>
   Traceback (most recent call last):
     File "/usr/lib/python3.8/threading.py", line 1454, in _after_fork
       assert len(_active) == 1
   AssertionError:

  Patching nova/monkey_patch.py with the following appears to fix this:

  diff --git a/nova/monkey_patch.py b/nova/monkey_patch.py
  index a07ff91dac..bb7252c643 100644
  --- a/nova/monkey_patch.py
  +++ b/nova/monkey_patch.py
  @@ -59,6 +59,9 @@ def _monkey_patch():
       else:
           eventlet.monkey_patch()

  +    import __original_module_threading
  +    import threading
  +    __original_module_threading.current_thread.__globals__['_active'] = threading._active
       # NOTE(rpodolyaka): import oslo_service first, so that it makes eventlet
       # hub use a monotonic clock to avoid issues with drifts of system time (see

  Similar patches to glance/cmd/api.py, glance/cmd/scrubber.py and
  glance/cmd/registry.py appears to fix it for glance.

  [Test Case]
  'systemctl status <service>' should not show the failure reported in [Impact].

  [Regression Potential]
  Should be low. The fix provided is a well-known solution to the problem. Openstack deployment + tempest regression testing will be performed to help reduce regression potential.

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