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[Trung Trinh <trung.t.trinh@xxxxxxxxxxxxxx>]

Public bug reported:

Version: stable/icehouse

Description:
Change the Nova config file "nova.conf" for specifying the target cpu_model of Penryn as follows:

cpu_mode = custom
cpu_model = Penryn
virt_type = kvm|qemu

After that, restart Nova services.

Eventually, try launching new VM, but it is failed with the following
Traceback:

2015-03-04 17:24:39.175 31397 TRACE nova.compute.manager [instance: 3987b178-2049-4421-9951-86d90c7d9b3f] Traceback (most recent call last):
2015-03-04 17:24:39.175 31397 TRACE nova.compute.manager [instance: 3987b178-2049-4421-9951-86d90c7d9b3f]   File "/opt/stack_stable_juno/nova/nova/compute/manager.py", line 2231, in _build_resources
2015-03-04 17:24:39.175 31397 TRACE nova.compute.manager [instance: 3987b178-2049-4421-9951-86d90c7d9b3f]     yield resources
2015-03-04 17:24:39.175 31397 TRACE nova.compute.manager [instance: 3987b178-2049-4421-9951-86d90c7d9b3f]   File "/opt/stack_stable_juno/nova/nova/compute/manager.py", line 2101, in _build_and_run_instance
2015-03-04 17:24:39.175 31397 TRACE nova.compute.manager [instance: 3987b178-2049-4421-9951-86d90c7d9b3f]     block_device_info=block_device_info)
2015-03-04 17:24:39.175 31397 TRACE nova.compute.manager [instance: 3987b178-2049-4421-9951-86d90c7d9b3f]   File "/opt/stack_stable_juno/nova/nova/virt/libvirt/driver.py", line 2619, in spawn
2015-03-04 17:24:39.175 31397 TRACE nova.compute.manager [instance: 3987b178-2049-4421-9951-86d90c7d9b3f]     write_to_disk=True)
2015-03-04 17:24:39.175 31397 TRACE nova.compute.manager [instance: 3987b178-2049-4421-9951-86d90c7d9b3f]   File "/opt/stack_stable_juno/nova/nova/virt/libvirt/driver.py", line 4150, in _get_guest_xml
2015-03-04 17:24:39.175 31397 TRACE nova.compute.manager [instance: 3987b178-2049-4421-9951-86d90c7d9b3f]     context)
2015-03-04 17:24:39.175 31397 TRACE nova.compute.manager [instance: 3987b178-2049-4421-9951-86d90c7d9b3f]   File "/opt/stack_stable_juno/nova/nova/virt/libvirt/driver.py", line 3936, in _get_guest_config
2015-03-04 17:24:39.175 31397 TRACE nova.compute.manager [instance: 3987b178-2049-4421-9951-86d90c7d9b3f]     flavor, CONF.libvirt.virt_type)
2015-03-04 17:24:39.175 31397 TRACE nova.compute.manager [instance: 3987b178-2049-4421-9951-86d90c7d9b3f]   File "/opt/stack_stable_juno/nova/nova/virt/libvirt/vif.py", line 352, in get_config
2015-03-04 17:24:39.175 31397 TRACE nova.compute.manager [instance: 3987b178-2049-4421-9951-86d90c7d9b3f]     _("Unexpected vif_type=%s") % vif_type)
2015-03-04 17:24:39.175 31397 TRACE nova.compute.manager [instance: 3987b178-2049-4421-9951-86d90c7d9b3f] NovaException: Unexpected vif_type=binding_failed

** Affects: nova
     Importance: Undecided
     Assignee: Trung Trinh (trung-t-trinh)
         Status: In Progress

** Changed in: nova
     Assignee: (unassigned) => Trung Trinh (trung-t-trinh)

** Changed in: nova
       Status: New => In Progress

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https://bugs.launchpad.net/bugs/1427977

Title:
  Failed to launch new VM after changing "nova.conf" for specifying
  target cpu_model

Status in OpenStack Compute (Nova):
  In Progress

Bug description:
  Version: stable/icehouse

  Description:
  Change the Nova config file "nova.conf" for specifying the target cpu_model of Penryn as follows:

  cpu_mode = custom
  cpu_model = Penryn
  virt_type = kvm|qemu

  After that, restart Nova services.

  Eventually, try launching new VM, but it is failed with the following
  Traceback:

  2015-03-04 17:24:39.175 31397 TRACE nova.compute.manager [instance: 3987b178-2049-4421-9951-86d90c7d9b3f] Traceback (most recent call last):
  2015-03-04 17:24:39.175 31397 TRACE nova.compute.manager [instance: 3987b178-2049-4421-9951-86d90c7d9b3f]   File "/opt/stack_stable_juno/nova/nova/compute/manager.py", line 2231, in _build_resources
  2015-03-04 17:24:39.175 31397 TRACE nova.compute.manager [instance: 3987b178-2049-4421-9951-86d90c7d9b3f]     yield resources
  2015-03-04 17:24:39.175 31397 TRACE nova.compute.manager [instance: 3987b178-2049-4421-9951-86d90c7d9b3f]   File "/opt/stack_stable_juno/nova/nova/compute/manager.py", line 2101, in _build_and_run_instance
  2015-03-04 17:24:39.175 31397 TRACE nova.compute.manager [instance: 3987b178-2049-4421-9951-86d90c7d9b3f]     block_device_info=block_device_info)
  2015-03-04 17:24:39.175 31397 TRACE nova.compute.manager [instance: 3987b178-2049-4421-9951-86d90c7d9b3f]   File "/opt/stack_stable_juno/nova/nova/virt/libvirt/driver.py", line 2619, in spawn
  2015-03-04 17:24:39.175 31397 TRACE nova.compute.manager [instance: 3987b178-2049-4421-9951-86d90c7d9b3f]     write_to_disk=True)
  2015-03-04 17:24:39.175 31397 TRACE nova.compute.manager [instance: 3987b178-2049-4421-9951-86d90c7d9b3f]   File "/opt/stack_stable_juno/nova/nova/virt/libvirt/driver.py", line 4150, in _get_guest_xml
  2015-03-04 17:24:39.175 31397 TRACE nova.compute.manager [instance: 3987b178-2049-4421-9951-86d90c7d9b3f]     context)
  2015-03-04 17:24:39.175 31397 TRACE nova.compute.manager [instance: 3987b178-2049-4421-9951-86d90c7d9b3f]   File "/opt/stack_stable_juno/nova/nova/virt/libvirt/driver.py", line 3936, in _get_guest_config
  2015-03-04 17:24:39.175 31397 TRACE nova.compute.manager [instance: 3987b178-2049-4421-9951-86d90c7d9b3f]     flavor, CONF.libvirt.virt_type)
  2015-03-04 17:24:39.175 31397 TRACE nova.compute.manager [instance: 3987b178-2049-4421-9951-86d90c7d9b3f]   File "/opt/stack_stable_juno/nova/nova/virt/libvirt/vif.py", line 352, in get_config
  2015-03-04 17:24:39.175 31397 TRACE nova.compute.manager [instance: 3987b178-2049-4421-9951-86d90c7d9b3f]     _("Unexpected vif_type=%s") % vif_type)
  2015-03-04 17:24:39.175 31397 TRACE nova.compute.manager [instance: 3987b178-2049-4421-9951-86d90c7d9b3f] NovaException: Unexpected vif_type=binding_failed

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