** Changed in: nova/ussuri
Status: New => Confirmed
** Also affects: nova/victoria
Importance: Low
Assignee: Sylvain Bauza (sylvain-bauza)
Status: In Progress
--
You received this bug notification because you are a member of Yahoo!
Engineering Team, which is subscribed to OpenStack Compute (nova).
https://bugs.launchpad.net/bugs/1896741
Title:
Intel mediated device info doesn't provide a name attribute
Status in OpenStack Compute (nova):
In Progress
Status in OpenStack Compute (nova) train series:
Confirmed
Status in OpenStack Compute (nova) ussuri series:
Confirmed
Status in OpenStack Compute (nova) victoria series:
In Progress
Bug description:
When testing some Xeon server for virtual GPU support, I saw that Nova
provides an exception as the i915 driver doesn't provide a name for
mdev types :
Sep 23 06:00:19 mymachine.redhat.com nova-compute[195458]: ERROR
nova.compute.manager Traceback (most recent call last):
Sep 23 06:00:19 mymachine.redhat.com nova-compute[195458]: ERROR
nova.compute.manager File "/opt/stack/nova/nova/compute/manager.py", line
9824, in _update_available_resource_for_node
Sep 23 06:00:19 mymachine.redhat.com nova-compute[195458]: ERROR
nova.compute.manager startup=startup)
Sep 23 06:00:19 mymachine.redhat.com nova-compute[195458]: ERROR
nova.compute.manager File "/opt/stack/nova/nova/compute/resource_tracker.py",
line 896, in update_available_resource
Sep 23 06:00:19 mymachine.redhat.com nova-compute[195458]: ERROR
nova.compute.manager self._update_available_resource(context, resources,
startup=startup)
Sep 23 06:00:19 mymachine.redhat.com nova-compute[195458]: ERROR
nova.compute.manager File
"/usr/local/lib/python3.7/site-packages/oslo_concurrency/lockutils.py", line
360, in inner
Sep 23 06:00:19 mymachine.redhat.com nova-compute[195458]: ERROR
nova.compute.manager return f(*args, **kwargs)
Sep 23 06:00:19 mymachine.redhat.com nova-compute[195458]: ERROR
nova.compute.manager File "/opt/stack/nova/nova/compute/resource_tracker.py",
line 981, in _update_available_resource
Sep 23 06:00:19 mymachine.redhat.com nova-compute[195458]: ERROR
nova.compute.manager self._update(context, cn, startup=startup)
Sep 23 06:00:19 mymachine.redhat.com nova-compute[195458]: ERROR
nova.compute.manager File "/opt/stack/nova/nova/compute/resource_tracker.py",
line 1233, in _update
Sep 23 06:00:19 mymachine.redhat.com nova-compute[195458]: ERROR
nova.compute.manager self._update_to_placement(context, compute_node,
startup)
Sep 23 06:00:19 mymachine.redhat.com nova-compute[195458]: ERROR
nova.compute.manager File
"/usr/local/lib/python3.7/site-packages/retrying.py", line 49, in wrapped_f
Sep 23 06:00:19 mymachine.redhat.com nova-compute[195458]: ERROR
nova.compute.manager return Retrying(*dargs, **dkw).call(f, *args, **kw)
Sep 23 06:00:19 mymachine.redhat.com nova-compute[195458]: ERROR
nova.compute.manager File
"/usr/local/lib/python3.7/site-packages/retrying.py", line 206, in call
Sep 23 06:00:19 mymachine.redhat.com nova-compute[195458]: ERROR
nova.compute.manager return attempt.get(self._wrap_exception)
Sep 23 06:00:19 mymachine.redhat.com nova-compute[195458]: ERROR
nova.compute.manager File
"/usr/local/lib/python3.7/site-packages/retrying.py", line 247, in get
Sep 23 06:00:19 mymachine.redhat.com nova-compute[195458]: ERROR
nova.compute.manager six.reraise(self.value[0], self.value[1],
self.value[2])
Sep 23 06:00:19 mymachine.redhat.com nova-compute[195458]: ERROR
nova.compute.manager File "/usr/local/lib/python3.7/site-packages/six.py",
line 703, in reraise
Sep 23 06:00:19 mymachine.redhat.com nova-compute[195458]: ERROR
nova.compute.manager raise value
Sep 23 06:00:19 mymachine.redhat.com nova-compute[195458]: ERROR
nova.compute.manager File
"/usr/local/lib/python3.7/site-packages/retrying.py", line 200, in call
Sep 23 06:00:19 mymachine.redhat.com nova-compute[195458]: ERROR
nova.compute.manager attempt = Attempt(fn(*args, **kwargs), attempt_number,
False)
Sep 23 06:00:19 mymachine.redhat.com nova-compute[195458]: ERROR
nova.compute.manager File "/opt/stack/nova/nova/compute/resource_tracker.py",
line 1169, in _update_to_placement
Sep 23 06:00:19 mymachine.redhat.com nova-compute[195458]: ERROR
nova.compute.manager self.driver.update_provider_tree(prov_tree, nodename)
Sep 23 06:00:19 mymachine.redhat.com nova-compute[195458]: ERROR
nova.compute.manager File "/opt/stack/nova/nova/virt/libvirt/driver.py", line
7857, in update_provider_tree
Sep 23 06:00:19 mymachine.redhat.com nova-compute[195458]: ERROR
nova.compute.manager provider_tree, nodename, allocations=allocations)
Sep 23 06:00:19 mymachine.redhat.com nova-compute[195458]: ERROR
nova.compute.manager File "/opt/stack/nova/nova/virt/libvirt/driver.py", line
8250, in _update_provider_tree_for_vgpu
Sep 23 06:00:19 mymachine.redhat.com nova-compute[195458]: ERROR
nova.compute.manager inventories_dict = self._get_gpu_inventories()
Sep 23 06:00:19 mymachine.redhat.com nova-compute[195458]: ERROR
nova.compute.manager File "/opt/stack/nova/nova/virt/libvirt/driver.py", line
7028, in _get_gpu_inventories
Sep 23 06:00:19 mymachine.redhat.com nova-compute[195458]: ERROR
nova.compute.manager count_per_dev =
self._count_mdev_capable_devices(enabled_vgpu_types)
Sep 23 06:00:19 mymachine.redhat.com nova-compute[195458]: ERROR
nova.compute.manager File "/opt/stack/nova/nova/virt/libvirt/driver.py", line
6984, in _count_mdev_capable_devices
Sep 23 06:00:19 mymachine.redhat.com nova-compute[195458]: ERROR
nova.compute.manager types=enabled_vgpu_types)
Sep 23 06:00:19 mymachine.redhat.com nova-compute[195458]: ERROR
nova.compute.manager File "/opt/stack/nova/nova/virt/libvirt/driver.py", line
7268, in _get_mdev_capable_devices
Sep 23 06:00:19 mymachine.redhat.com nova-compute[195458]: ERROR
nova.compute.manager device = self._get_mdev_capabilities_for_dev(name,
types)
Sep 23 06:00:19 mymachine.redhat.com nova-compute[195458]: ERROR
nova.compute.manager File "/opt/stack/nova/nova/virt/libvirt/driver.py", line
7253, in _get_mdev_capabilities_for_dev
Sep 23 06:00:19 mymachine.redhat.com nova-compute[195458]: ERROR
nova.compute.manager 'name': cap['name'],
Sep 23 06:00:19 mymachine.redhat.com nova-compute[195458]: ERROR
nova.compute.manager KeyError: 'name'
For example :
[root@mymachine ~]# ll
/sys/class/mdev_bus/0000\:00\:02.0/mdev_supported_types/i915-GVTg_V5_8/
total 0
-r--r--r--. 1 root root 4096 Sep 22 14:18 available_instances
--w-------. 1 root root 4096 Sep 23 06:01 create
-r--r--r--. 1 root root 4096 Sep 23 05:43 description
-r--r--r--. 1 root root 4096 Sep 22 14:18 device_api
drwxr-xr-x. 2 root root 0 Sep 23 06:01 devices
When looking at the kernel driver API documentation
https://www.kernel.org/doc/html/latest/driver-api/vfio-mediated-
device.html it says that the "name" attribute is optional:
"name
This attribute should show human readable name. This is optional
attribute."
The fix should be easy, we don't use this attribute in Nova.
To manage notifications about this bug go to:
https://bugs.launchpad.net/nova/+bug/1896741/+subscriptions
--
Mailing list: https://launchpad.net/~yahoo-eng-team
Post to : [email protected]
Unsubscribe : https://launchpad.net/~yahoo-eng-team
More help : https://help.launchpad.net/ListHelp
