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[Bug 1306432] Re: n-cpu with devstack is down caused by libvirt io error sometimes

To: yahoo-eng-team@xxxxxxxxxxxxxxxxxxx
From: Sean Dague <sean@xxxxxxxxx>
Date: Wed, 01 Apr 2015 15:32:16 -0000
Reply-to: Bug 1306432 <1306432@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx
we added retry logic around this

** Changed in: nova
       Status: Incomplete => Fix Released

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https://bugs.launchpad.net/bugs/1306432

Title:
  n-cpu with devstack is down caused by libvirt io error sometimes

Status in OpenStack Compute (Nova):
  Fix Released

Bug description:
  OS: Ubuntu 12.04
  Kernel: 3.8.0-37-generic 
  libvirt: 0.9.8-2ubuntu17.18

  2014-04-11 16:35:03.980 12081 AUDIT nova.service [-] Starting compute node (version 2014.2)
  2014-04-11 16:35:04.004 12081 DEBUG nova.virt.libvirt.driver [-] Connecting to libvirt: qemu:///system _get_new_connection /opt/stack/nova/nova/virt/libvirt/driver.py:670
  2014-04-11 16:35:18.664 WARNING nova.virt.libvirt.driver [req-6e97f1b4-a832-4521-881d-c91196220556 None None] Cannot update service status on host: Router,since it is not registered.
  2014-04-11 16:35:18.664 12081 DEBUG nova.virt.libvirt.driver [-] Registering for lifecycle events <nova.virt.libvirt.driver.LibvirtDriver object at 0x2b5ce10> _get_new_connection /opt/stack/nova/nova/virt/libvirt/driver.p
  y:686
  2014-04-11 16:35:19.145 12081 DEBUG nova.virt.libvirt.driver [-] Registering for connection events: <nova.virt.libvirt.driver.LibvirtDriver object at 0x2b5ce10> _get_new_connection /opt/stack/nova/nova/virt/libvirt/driver
  .py:698
  2014-04-11 16:35:19.145 12081 DEBUG nova.virt.libvirt.driver [-] The version of python-libvirt does not support registerCloseCallback or is too old: virConnect instance has no attribute 'registerCloseCallback' _get_new_co
  nnection /opt/stack/nova/nova/virt/libvirt/driver.py:708
  Traceback (most recent call last):
    File "/usr/local/lib/python2.7/dist-packages/eventlet/hubs/hub.py", line 346, in fire_timers
      timer()
    File "/usr/local/lib/python2.7/dist-packages/eventlet/hubs/timer.py", line 56, in __call__
      cb(*args, **kw)
    File "/usr/local/lib/python2.7/dist-packages/eventlet/event.py", line 163, in _do_send
      waiter.switch(result)
    File "/usr/local/lib/python2.7/dist-packages/eventlet/greenthread.py", line 194, in main
      result = function(*args, **kwargs)
    File "/opt/stack/nova/nova/openstack/common/service.py", line 490, in run_service
      service.start()
    File "/opt/stack/nova/nova/service.py", line 163, in start
      self.manager.init_host()
    File "/opt/stack/nova/nova/compute/manager.py", line 1051, in init_host
      self.driver.init_host(host=self.host)
    File "/opt/stack/nova/nova/virt/libvirt/driver.py", line 656, in init_host
      self._do_quality_warnings()
    File "/opt/stack/nova/nova/virt/libvirt/driver.py", line 639, in _do_quality_warnings
      caps = self.get_host_capabilities()
    File "/opt/stack/nova/nova/virt/libvirt/driver.py", line 2842, in get_host_capabilities
      xmlstr = self._conn.getCapabilities()
    File "/usr/local/lib/python2.7/dist-packages/eventlet/tpool.py", line 179, in doit
      result = proxy_call(self._autowrap, f, *args, **kwargs)
    File "/usr/local/lib/python2.7/dist-packages/eventlet/tpool.py", line 139, in proxy_call
      rv = execute(f,*args,**kwargs)
    File "/usr/local/lib/python2.7/dist-packages/eventlet/tpool.py", line 77, in tworker
      rv = meth(*args,**kwargs)
    File "/usr/lib/python2.7/dist-packages/libvirt.py", line 2236, in getCapabilities
      if ret is None: raise libvirtError ('virConnectGetCapabilities() failed', conn=self)
  libvirtError: End of file while reading data: Input/output error
  2014-04-11 16:35:50.023 12081 ERROR nova.openstack.common.threadgroup [-] End of file while reading data: Input/output error
  2014-04-11 16:35:50.023 12081 TRACE nova.openstack.common.threadgroup Traceback (most recent call last):
  2014-04-11 16:35:50.023 12081 TRACE nova.openstack.common.threadgroup   File "/opt/stack/nova/nova/openstack/common/threadgroup.py", line 125, in wait
  2014-04-11 16:35:50.023 12081 TRACE nova.openstack.common.threadgroup     x.wait()
  2014-04-11 16:35:50.023 12081 TRACE nova.openstack.common.threadgroup   File "/opt/stack/nova/nova/openstack/common/threadgroup.py", line 47, in wait
  2014-04-11 16:35:50.023 12081 TRACE nova.openstack.common.threadgroup     return self.thread.wait()
  2014-04-11 16:35:50.023 12081 TRACE nova.openstack.common.threadgroup   File "/usr/local/lib/python2.7/dist-packages/eventlet/greenthread.py", line 168, in wait
  2014-04-11 16:35:50.023 12081 TRACE nova.openstack.common.threadgroup     return self._exit_event.wait()
  2014-04-11 16:35:50.023 12081 TRACE nova.openstack.common.threadgroup   File "/usr/local/lib/python2.7/dist-packages/eventlet/event.py", line 116, in wait
  2014-04-11 16:35:50.023 12081 TRACE nova.openstack.common.threadgroup     return hubs.get_hub().switch()
  2014-04-11 16:35:50.023 12081 TRACE nova.openstack.common.threadgroup   File "/usr/local/lib/python2.7/dist-packages/eventlet/hubs/hub.py", line 187, in switch
  2014-04-11 16:35:50.023 12081 TRACE nova.openstack.common.threadgroup     return self.greenlet.switch()
  2014-04-11 16:35:50.023 12081 TRACE nova.openstack.common.threadgroup   File "/usr/local/lib/python2.7/dist-packages/eventlet/greenthread.py", line 194, in main
  2014-04-11 16:35:50.023 12081 TRACE nova.openstack.common.threadgroup     result = function(*args, **kwargs)
  2014-04-11 16:35:50.023 12081 TRACE nova.openstack.common.threadgroup   File "/opt/stack/nova/nova/openstack/common/service.py", line 490, in run_service
  2014-04-11 16:35:50.023 12081 TRACE nova.openstack.common.threadgroup     service.start()
  2014-04-11 16:35:50.023 12081 TRACE nova.openstack.common.threadgroup   File "/opt/stack/nova/nova/service.py", line 163, in start
  2014-04-11 16:35:50.023 12081 TRACE nova.openstack.common.threadgroup     self.manager.init_host()
  2014-04-11 16:35:50.023 12081 TRACE nova.openstack.common.threadgroup   File "/opt/stack/nova/nova/compute/manager.py", line 1051, in init_host
  2014-04-11 16:35:50.023 12081 TRACE nova.openstack.common.threadgroup     self.driver.init_host(host=self.host)
  2014-04-11 16:35:50.023 12081 TRACE nova.openstack.common.threadgroup   File "/opt/stack/nova/nova/virt/libvirt/driver.py", line 656, in init_host
  2014-04-11 16:35:50.023 12081 TRACE nova.openstack.common.threadgroup     self._do_quality_warnings()
  2014-04-11 16:35:50.023 12081 TRACE nova.openstack.common.threadgroup   File "/opt/stack/nova/nova/virt/libvirt/driver.py", line 639, in _do_quality_warnings
  2014-04-11 16:35:50.023 12081 TRACE nova.openstack.common.threadgroup     caps = self.get_host_capabilities()
  2014-04-11 16:35:50.023 12081 TRACE nova.openstack.common.threadgroup   File "/opt/stack/nova/nova/virt/libvirt/driver.py", line 2842, in get_host_capabilities
  2014-04-11 16:35:50.023 12081 TRACE nova.openstack.common.threadgroup     xmlstr = self._conn.getCapabilities()
  2014-04-11 16:35:50.023 12081 TRACE nova.openstack.common.threadgroup   File "/usr/local/lib/python2.7/dist-packages/eventlet/tpool.py", line 179, in doit
  2014-04-11 16:35:50.023 12081 TRACE nova.openstack.common.threadgroup     result = proxy_call(self._autowrap, f, *args, **kwargs)
  2014-04-11 16:35:50.023 12081 TRACE nova.openstack.common.threadgroup   File "/usr/local/lib/python2.7/dist-packages/eventlet/tpool.py", line 139, in proxy_call
  2014-04-11 16:35:50.023 12081 TRACE nova.openstack.common.threadgroup     rv = execute(f,*args,**kwargs)
  2014-04-11 16:35:50.023 12081 TRACE nova.openstack.common.threadgroup   File "/usr/local/lib/python2.7/dist-packages/eventlet/tpool.py", line 77, in tworker
  2014-04-11 16:35:50.023 12081 TRACE nova.openstack.common.threadgroup     rv = meth(*args,**kwargs)
  2014-04-11 16:35:50.023 12081 TRACE nova.openstack.common.threadgroup   File "/usr/lib/python2.7/dist-packages/libvirt.py", line 2236, in getCapabilities
  2014-04-11 16:35:50.023 12081 TRACE nova.openstack.common.threadgroup     if ret is None: raise libvirtError ('virConnectGetCapabilities() failed', conn=self)
  2014-04-11 16:35:50.023 12081 TRACE nova.openstack.common.threadgroup libvirtError: End of file while reading data: Input/output error
  2014-04-11 16:35:50.023 12081 TRACE nova.openstack.common.threadgroup

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References

[Bug 1306432] [NEW] n-cpu with devstack is down caused by libvirt io error sometimes
From: fujioka yuuichi, 2014-04-11