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https://github.com/NVIDIA/nvidia-container-toolkit
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A driverRoot defines both the driver library root and the root for device nodes. In the case of preinstalled drivers or the driver container, these are equal, but in cases such as GKE they do not match. In this case, drivers are extracted to a folder and devices exist at the root /. The changes here add a devRoot option to the nvcdi API that allows the parent of /dev to be specified explicitly. Signed-off-by: Evan Lezar <elezar@nvidia.com>
54 lines
1.8 KiB
Go
54 lines
1.8 KiB
Go
/**
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# Copyright (c) 2022, NVIDIA CORPORATION. All rights reserved.
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#
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# 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 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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**/
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package modifier
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import (
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"fmt"
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"github.com/NVIDIA/nvidia-container-toolkit/internal/config"
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"github.com/NVIDIA/nvidia-container-toolkit/internal/config/image"
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"github.com/NVIDIA/nvidia-container-toolkit/internal/discover"
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"github.com/NVIDIA/nvidia-container-toolkit/internal/logger"
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"github.com/NVIDIA/nvidia-container-toolkit/internal/oci"
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)
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const (
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nvidiaGDSEnvvar = "NVIDIA_GDS"
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)
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// NewGDSModifier creates the modifiers for GDS devices.
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// If the spec does not contain the NVIDIA_GDS=enabled environment variable no changes are made.
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func NewGDSModifier(logger logger.Interface, cfg *config.Config, image image.CUDA) (oci.SpecModifier, error) {
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if devices := image.DevicesFromEnvvars(visibleDevicesEnvvar); len(devices.List()) == 0 {
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logger.Infof("No modification required; no devices requested")
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return nil, nil
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}
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if image.Getenv(nvidiaGDSEnvvar) != "enabled" {
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return nil, nil
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}
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driverRoot := cfg.NVIDIAContainerCLIConfig.Root
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devRoot := cfg.NVIDIAContainerCLIConfig.Root
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d, err := discover.NewGDSDiscoverer(logger, driverRoot, devRoot)
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if err != nil {
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return nil, fmt.Errorf("failed to construct discoverer for GDS devices: %v", err)
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}
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return NewModifierFromDiscoverer(logger, d)
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}
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