Public bug reported:
In Havana, this was a valid setting:
libvirt_vif_driver=nova.virt.libvirt.vif.LibvirtHybridOVSBridgeDriver
The nova.virt.libvirt.vif.LibvirtHybridOVSBridgeDriver class has been
removed in Icehouse; if nova-compute is run with this setting in
nova.conf, the resulting error is...
2014-04-04 19:33:55.783 17413 TRACE nova.virt.driver ImportError:
Class LibvirtDriver cannot be found (['Traceback (most recent call
last):\n', ' File "/usr/lib/python2.6/site-
packages/nova/openstack/common/importutils.py", line 29, in
import_class\n return getattr(sys.modules[mod_str], class_str)\n',
"AttributeError: 'module' object has no attribute 'LibvirtDriver'\n"])
...which is misleading, and will cause people to start looking at the
setting of compute_driver. The error is caused by the libvirt driver
attempting to import the vif class:
vif_class = importutils.import_class(CONF.libvirt.vif_driver)
If this configuration option was valid in Havana, then:
(a) there should probably be a deprecation warning prior to it going away, and
(b) the error message in icehouse should point at the actual problem rather
than throwing a misleading exception.
** Affects: nova
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1302796
Title:
nova-compute (icehouse) exits with a misleading error when
libvirt_vif_driver =
nova.virt.libvirt.vif.LibvirtHybridOVSBridgeDriver
Status in OpenStack Compute (Nova):
New
Bug description:
In Havana, this was a valid setting:
libvirt_vif_driver=nova.virt.libvirt.vif.LibvirtHybridOVSBridgeDriver
The nova.virt.libvirt.vif.LibvirtHybridOVSBridgeDriver class has been
removed in Icehouse; if nova-compute is run with this setting in
nova.conf, the resulting error is...
2014-04-04 19:33:55.783 17413 TRACE nova.virt.driver ImportError:
Class LibvirtDriver cannot be found (['Traceback (most recent call
last):\n', ' File "/usr/lib/python2.6/site-
packages/nova/openstack/common/importutils.py", line 29, in
import_class\n return getattr(sys.modules[mod_str], class_str)\n',
"AttributeError: 'module' object has no attribute 'LibvirtDriver'\n"])
...which is misleading, and will cause people to start looking at the
setting of compute_driver. The error is caused by the libvirt driver
attempting to import the vif class:
vif_class =
importutils.import_class(CONF.libvirt.vif_driver)
If this configuration option was valid in Havana, then:
(a) there should probably be a deprecation warning prior to it going away,
and
(b) the error message in icehouse should point at the actual problem rather
than throwing a misleading exception.
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https://bugs.launchpad.net/nova/+bug/1302796/+subscriptions
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