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Reviewed:  https://review.openstack.org/295118
Committed: https://git.openstack.org/cgit/openstack/nova/commit/?id=107ae91ed6ab17400909a4f37024112aeeacbdf7
Submitter: Jenkins
Branch:    master

commit 107ae91ed6ab17400909a4f37024112aeeacbdf7
Author: Wenzhi Yu <wenzhi_yu@xxxxxxx>
Date:   Mon Mar 21 16:28:24 2016 +0800

    Set 'libvirt.sysinfo_serial' to 'none' in RealTimeServersTest
    
    During execution of nova test case 'nova.tests.functional.libvirt.
    test_rt_servers.RealTimeServersTest.test_success', 'LibvirtDriver.
    _sysinfo_serial_func' method will be called to get information from
    the compute host[1] if value of 'CONF.libvirt.sysinfo_serial' is
    not 'none', this is not expected during test run.
    
    We should set 'CONF.libvirt.sysinfo_serial' to 'none' in test case
    so that it would not try to get info from compute host during execution.
    
    [1]https://github.com/openstack/nova/blob/13.0.0.0rc1/nova/virt/libvirt/driver.py#L569-L577
    
    Change-Id: I0f6c7fcea34c3ecaa9b19861a7640fda551f040f
    Closes-bug: #1559579


** Changed in: nova
       Status: In Progress => Fix Released

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https://bugs.launchpad.net/bugs/1559579

Title:
  NovaException: Unable to get host UUID: /etc/machine-id is empty

Status in OpenStack Compute (nova):
  Fix Released

Bug description:
  This is in a functional test locally:

  Traceback (most recent call last):
        File "nova/compute/manager.py", line 2218, in _build_resources
          yield resources
        File "nova/compute/manager.py", line 2064, in _build_and_run_instance
          block_device_info=block_device_info)
        File "nova/virt/libvirt/driver.py", line 2767, in spawn
          write_to_disk=True)
        File "nova/virt/libvirt/driver.py", line 4714, in _get_guest_xml
          context)
        File "nova/virt/libvirt/driver.py", line 4563, in _get_guest_config
          root_device_name)
        File "nova/virt/libvirt/driver.py", line 4370, in _configure_guest_by_virt_type
          guest.sysinfo = self._get_guest_config_sysinfo(instance)
        File "nova/virt/libvirt/driver.py", line 3716, in _get_guest_config_sysinfo
          sysinfo.system_serial = self._sysinfo_serial_func()
        File "nova/virt/libvirt/driver.py", line 3705, in _get_host_sysinfo_serial_auto
          return self._get_host_sysinfo_serial_os()
        File "nova/virt/libvirt/driver.py", line 3699, in _get_host_sysinfo_serial_os
          raise exception.NovaException(msg)
      NovaException: Unable to get host UUID: /etc/machine-id is empty

  
  From: nova.tests.functional.libvirt.test_rt_servers.RealTimeServersTest.test_success

  The test should be mocking something out since it shouldn't expect
  actual files to exist on the host system during test runs.

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