de2a27ad8b
Identify acclerator devices by processing pci devices and update to ironic node when found. Currently only Tesla T4 from NVIDIA is supported. Change-Id: Id702cb04cb2445d544965821680cd0cc5cfd37e5 Story: 2007971 Task: 40473
79 lines
3.0 KiB
Python
79 lines
3.0 KiB
Python
# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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# implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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"""Gather and distinguish Accelerator PCI devices from inventory."""
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from oslo_config import cfg
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import yaml
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from ironic_inspector.plugins import base
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from ironic_inspector import utils
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CONF = cfg.CONF
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LOG = utils.getProcessingLogger(__name__)
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class AccelDevicesHook(base.ProcessingHook):
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"""Processing hook for distinguishing accelerator devices."""
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def __init__(self):
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super(AccelDevicesHook, self).__init__()
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self._known_devices = {}
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with open(CONF.accelerators.known_devices) as f:
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self._known_devices = yaml.safe_load(f)
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self._validate_datasource()
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def _validate_datasource(self):
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# Do a simple check against the data source
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if (not self._known_devices or
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'pci_devices' not in self._known_devices):
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raise RuntimeError('Could not find pci_devices in the '
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'configuration data')
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if not isinstance(self._known_devices['pci_devices'], list):
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raise RuntimeError('pci_devices should contain a list of devices')
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for device in self._known_devices['pci_devices']:
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if not device.get('vendor_id') or not device.get('device_id'):
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raise RuntimeError('one of devices is missing vendor_id or '
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'device_id')
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def _find_accelerator(self, vendor_id, device_id):
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for dev in self._known_devices['pci_devices']:
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if (dev['vendor_id'] == vendor_id and
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dev['device_id'] == device_id):
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return dev
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def before_update(self, introspection_data, node_info, **kwargs):
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pci_devices = introspection_data.get('pci_devices', [])
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if not pci_devices:
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LOG.warning('Unable to distinguish accelerator devices due to no '
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'PCI devices information was received from the '
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'ramdisk.')
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return
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accelerators = []
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for pci_dev in pci_devices:
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dev = self._find_accelerator(pci_dev['vendor_id'],
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pci_dev['product_id'])
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if dev:
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accel = {k: dev[k] for k in dev.keys()}
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accel.update(pci_address=pci_dev['bus'])
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accelerators.append(accel)
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if accelerators:
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node_info.update_properties(accelerators=accelerators)
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LOG.info('Found the following accelerator devices: %s',
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accelerators)
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else:
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LOG.info('No known accelerator devices found')
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