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[Bug 1607400] [NEW] UEFI not supported on SLES

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Public bug reported:

Launching an image with UEFI bootloader on a SLES 12 SP1 instances gives

2016-07-28 08:23:12.820 3224 ERROR nova.compute.manager [instance: 5289d6f7-f4f5-4f95-bd55-4812ec3ab800] Traceback (most recent call last):
2016-07-28 08:23:12.820 3224 ERROR nova.compute.manager [instance: 5289d6f7-f4f5-4f95-bd55-4812ec3ab800]   File "/usr/lib/python2.7/site-packages/nova/compute/manager.py", line 2218, in _build_resources
2016-07-28 08:23:12.820 3224 ERROR nova.compute.manager [instance: 5289d6f7-f4f5-4f95-bd55-4812ec3ab800]     yield resources
2016-07-28 08:23:12.820 3224 ERROR nova.compute.manager [instance: 5289d6f7-f4f5-4f95-bd55-4812ec3ab800]   File "/usr/lib/python2.7/site-packages/nova/compute/manager.py", line 2064, in _build_and_run_instance
2016-07-28 08:23:12.820 3224 ERROR nova.compute.manager [instance: 5289d6f7-f4f5-4f95-bd55-4812ec3ab800]     block_device_info=block_device_info)
2016-07-28 08:23:12.820 3224 ERROR nova.compute.manager [instance: 5289d6f7-f4f5-4f95-bd55-4812ec3ab800]   File "/usr/lib/python2.7/site-packages/nova/virt/libvirt/driver.py", line 2777, in spawn
2016-07-28 08:23:12.820 3224 ERROR nova.compute.manager [instance: 5289d6f7-f4f5-4f95-bd55-4812ec3ab800]     write_to_disk=True)
2016-07-28 08:23:12.820 3224 ERROR nova.compute.manager [instance: 5289d6f7-f4f5-4f95-bd55-4812ec3ab800]   File "/usr/lib/python2.7/site-packages/nova/virt/libvirt/driver.py", line 4730, in _get_guest_xml
2016-07-28 08:23:12.820 3224 ERROR nova.compute.manager [instance: 5289d6f7-f4f5-4f95-bd55-4812ec3ab800]     context)
2016-07-28 08:23:12.820 3224 ERROR nova.compute.manager [instance: 5289d6f7-f4f5-4f95-bd55-4812ec3ab800]   File "/usr/lib/python2.7/site-packages/nova/virt/libvirt/driver.py", line 4579, in _get_guest_config
2016-07-28 08:23:12.820 3224 ERROR nova.compute.manager [instance: 5289d6f7-f4f5-4f95-bd55-4812ec3ab800]     root_device_name)
2016-07-28 08:23:12.820 3224 ERROR nova.compute.manager [instance: 5289d6f7-f4f5-4f95-bd55-4812ec3ab800]   File "/usr/lib/python2.7/site-packages/nova/virt/libvirt/driver.py", line 4401, in _configure_guest_by_virt_type
2016-07-28 08:23:12.820 3224 ERROR nova.compute.manager [instance: 5289d6f7-f4f5-4f95-bd55-4812ec3ab800]     raise exception.UEFINotSupported()
2016-07-28 08:23:12.820 3224 ERROR nova.compute.manager [instance: 5289d6f7-f4f5-4f95-bd55-4812ec3ab800] UEFINotSupported: UEFI is not supported

this is because the function probes for files that are in different
locations on SLES, namely it looks for "/usr/share/OVMF/OVMF_CODE.fd" /
/usr/share/AAVMF/AAVMF_CODE.fd which are the documented upstream
defaults. However the SLES libvirt is compiled to default to different
paths, that exist.

one possibility would be to introspect domCapabilities from libvirt,
which works just fine. An alternative patch is to just add the
alternative paths for now.

** Affects: nova
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1607400

Title:
  UEFI not supported on SLES

Status in OpenStack Compute (nova):
  New

Bug description:
  Launching an image with UEFI bootloader on a SLES 12 SP1 instances
  gives

  2016-07-28 08:23:12.820 3224 ERROR nova.compute.manager [instance: 5289d6f7-f4f5-4f95-bd55-4812ec3ab800] Traceback (most recent call last):
  2016-07-28 08:23:12.820 3224 ERROR nova.compute.manager [instance: 5289d6f7-f4f5-4f95-bd55-4812ec3ab800]   File "/usr/lib/python2.7/site-packages/nova/compute/manager.py", line 2218, in _build_resources
  2016-07-28 08:23:12.820 3224 ERROR nova.compute.manager [instance: 5289d6f7-f4f5-4f95-bd55-4812ec3ab800]     yield resources
  2016-07-28 08:23:12.820 3224 ERROR nova.compute.manager [instance: 5289d6f7-f4f5-4f95-bd55-4812ec3ab800]   File "/usr/lib/python2.7/site-packages/nova/compute/manager.py", line 2064, in _build_and_run_instance
  2016-07-28 08:23:12.820 3224 ERROR nova.compute.manager [instance: 5289d6f7-f4f5-4f95-bd55-4812ec3ab800]     block_device_info=block_device_info)
  2016-07-28 08:23:12.820 3224 ERROR nova.compute.manager [instance: 5289d6f7-f4f5-4f95-bd55-4812ec3ab800]   File "/usr/lib/python2.7/site-packages/nova/virt/libvirt/driver.py", line 2777, in spawn
  2016-07-28 08:23:12.820 3224 ERROR nova.compute.manager [instance: 5289d6f7-f4f5-4f95-bd55-4812ec3ab800]     write_to_disk=True)
  2016-07-28 08:23:12.820 3224 ERROR nova.compute.manager [instance: 5289d6f7-f4f5-4f95-bd55-4812ec3ab800]   File "/usr/lib/python2.7/site-packages/nova/virt/libvirt/driver.py", line 4730, in _get_guest_xml
  2016-07-28 08:23:12.820 3224 ERROR nova.compute.manager [instance: 5289d6f7-f4f5-4f95-bd55-4812ec3ab800]     context)
  2016-07-28 08:23:12.820 3224 ERROR nova.compute.manager [instance: 5289d6f7-f4f5-4f95-bd55-4812ec3ab800]   File "/usr/lib/python2.7/site-packages/nova/virt/libvirt/driver.py", line 4579, in _get_guest_config
  2016-07-28 08:23:12.820 3224 ERROR nova.compute.manager [instance: 5289d6f7-f4f5-4f95-bd55-4812ec3ab800]     root_device_name)
  2016-07-28 08:23:12.820 3224 ERROR nova.compute.manager [instance: 5289d6f7-f4f5-4f95-bd55-4812ec3ab800]   File "/usr/lib/python2.7/site-packages/nova/virt/libvirt/driver.py", line 4401, in _configure_guest_by_virt_type
  2016-07-28 08:23:12.820 3224 ERROR nova.compute.manager [instance: 5289d6f7-f4f5-4f95-bd55-4812ec3ab800]     raise exception.UEFINotSupported()
  2016-07-28 08:23:12.820 3224 ERROR nova.compute.manager [instance: 5289d6f7-f4f5-4f95-bd55-4812ec3ab800] UEFINotSupported: UEFI is not supported

  this is because the function probes for files that are in different
  locations on SLES, namely it looks for "/usr/share/OVMF/OVMF_CODE.fd"
  / /usr/share/AAVMF/AAVMF_CODE.fd which are the documented upstream
  defaults. However the SLES libvirt is compiled to default to different
  paths, that exist.

  one possibility would be to introspect domCapabilities from libvirt,
  which works just fine. An alternative patch is to just add the
  alternative paths for now.

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Follow ups

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