Spawning images fails on Hyper-V Technical Preview

[Alessandro Pilotti]

Spawning images fails on the current Hyper-V Technical Preview, due to slight changes in Msvm_ImageManagementService.GetVirtualHardDiskSettingData's return value.

2014-10-02 11:52:40.065 924 TRACE nova.compute.manager [instance: 1864933e-c50d-4f86-8b51-cac6c51bcf4e] Traceback (most recent call last):
2014-10-02 11:52:40.065 924 TRACE nova.compute.manager [instance: 1864933e-c50d-4f86-8b51-cac6c51bcf4e] File "C:\Program Files (x86)\Cloudbase Solutions\OpenStack\Nova\Python27\lib\site-packages\nova\compute\manager.py", line 1738, in _spawn
2014-10-02 11:52:40.065 924 TRACE nova.compute.manager [instance: 1864933e-c50d-4f86-8b51-cac6c51bcf4e] block_device_info)
2014-10-02 11:52:40.065 924 TRACE nova.compute.manager [instance: 1864933e-c50d-4f86-8b51-cac6c51bcf4e] File "C:\Program Files (x86)\Cloudbase Solutions\OpenStack\Nova\Python27\lib\site-packages\nova\virt\hyperv\driver.py", line 58, in spawn
2014-10-02 11:52:40.065 924 TRACE nova.compute.manager [instance: 1864933e-c50d-4f86-8b51-cac6c51bcf4e] admin_password, network_info, block_device_info)
2014-10-02 11:52:40.065 924 TRACE nova.compute.manager [instance: 1864933e-c50d-4f86-8b51-cac6c51bcf4e] File "C:\Program Files (x86)\Cloudbase Solutions\OpenStack\Nova\Python27\lib\site-packages\nova\virt\hyperv\vmops.py", line 101, in wrapper
2014-10-02 11:52:40.065 924 TRACE nova.compute.manager [instance: 1864933e-c50d-4f86-8b51-cac6c51bcf4e] return function(self, *args, **kwds)
2014-10-02 11:52:40.065 924 TRACE nova.compute.manager [instance: 1864933e-c50d-4f86-8b51-cac6c51bcf4e] File "C:\Program Files (x86)\Cloudbase Solutions\OpenStack\Nova\Python27\lib\site-packages\nova\virt\hyperv\vmops.py", line 259, in spawn
2014-10-02 11:52:40.065 924 TRACE nova.compute.manager [instance: 1864933e-c50d-4f86-8b51-cac6c51bcf4e] root_vhd_path = self._create_root_vhd(context, instance)
2014-10-02 11:52:40.065 924 TRACE nova.compute.manager [instance: 1864933e-c50d-4f86-8b51-cac6c51bcf4e] File "C:\Program Files (x86)\Cloudbase Solutions\OpenStack\Nova\Python27\lib\site-packages\nova\virt\hyperv\vmops.py", line 168, in _create_root_vhd
2014-10-02 11:52:40.065 924 TRACE nova.compute.manager [instance: 1864933e-c50d-4f86-8b51-cac6c51bcf4e] base_vhd_info = self._vhdutils.get_vhd_info(base_vhd_path)
2014-10-02 11:52:40.065 924 TRACE nova.compute.manager [instance: 1864933e-c50d-4f86-8b51-cac6c51bcf4e] File "C:\Program Files (x86)\Cloudbase Solutions\OpenStack\Nova\Python27\lib\site-packages\nova\virt\hyperv\vhdutilsv2.py", line 219, in get_vhd_info
2014-10-02 11:52:40.065 924 TRACE nova.compute.manager [instance: 1864933e-c50d-4f86-8b51-cac6c51bcf4e] et = ElementTree.fromstring(vhd_info_xml)
2014-10-02 11:52:40.065 924 TRACE nova.compute.manager [instance: 1864933e-c50d-4f86-8b51-cac6c51bcf4e] AttributeError: 'NoneType' object has no attribute 'text'
2014-10-02 11:52:40.065 924 TRACE nova.compute.manager [instance: 1864933e-c50d-4f86-8b51-cac6c51bcf4e]

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/125743

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/125743
Committed: https://git.openstack.org/cgit/openstack/nova/commit/?id=1f63f97c6fd47accdcba3a027e488a09b949ffca
Submitter: Jenkins
Branch: master

commit 1f63f97c6fd47accdcba3a027e488a09b949ffca
Author: Alessandro Pilotti <email address hidden>
Date: Thu Oct 2 22:05:23 2014 +0300

    Fixes spawn issue on Hyper-V

    The current Hyper-V Technical Preview introduces slight changes
    in the data returned by GetVirtualHardDiskSettingData in
    Msvm_ImageManagementService.

    Co-Authored-By: Adelina Tuvenie <email address hidden>
    Change-Id: I830b07efb657acc1486f86a475310f5f4e584a37
    Closes-Bug: #1376883