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Make handling of nvidia-ctk path consistent

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This change adds an --nvidia-ctk-path to the nvidia-ctk cdi generate
command. This ensures that the executable path for the generated
hooks can be specified consistently.

Since the NVIDIA Container Runtime already allows for the executable
path to be specified in the config the utility code to update the
LDCache and create other nvidia-ctk hooks are also updated.

Signed-off-by: Evan Lezar <elezar@nvidia.com>
This commit is contained in:
Evan Lezar
2022-12-12 15:26:21 +01:00
parent 50d7fb8f41
commit 35df24d63a
8 changed files with 96 additions and 81 deletions
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4
cmd/nvidia-ctk/cdi/generate/common.go
View File

@@ -27,7 +27,7 @@ import (
// NewCommonDiscoverer returns a discoverer for entities that are not associated with a specific CDI device.
// This includes driver libraries and meta devices, for example.
func NewCommonDiscoverer(logger *logrus.Logger, root string, nvmllib nvml.Interface) (discover.Discover, error) {
func NewCommonDiscoverer(logger *logrus.Logger, root string, nvidiaCTKPath string, nvmllib nvml.Interface) (discover.Discover, error) {
metaDevices := discover.NewDeviceDiscoverer(
logger,
lookup.NewCharDeviceLocator(logger, root),
@@ -45,7 +45,7 @@ func NewCommonDiscoverer(logger *logrus.Logger, root string, nvmllib nvml.Interf
return nil, fmt.Errorf("error constructing discoverer for graphics mounts: %v", err)
}
driverFiles, err := NewDriverDiscoverer(logger, root, nvmllib)
driverFiles, err := NewDriverDiscoverer(logger, root, nvidiaCTKPath, nvmllib)
if err != nil {
return nil, fmt.Errorf("failed to create discoverer for driver files: %v", err)
}

23
cmd/nvidia-ctk/cdi/generate/device-folder-permissions.go
View File

@@ -20,15 +20,15 @@ import (
"path/filepath"
"github.com/NVIDIA/nvidia-container-toolkit/internal/discover"
"github.com/NVIDIA/nvidia-container-toolkit/internal/lookup"
"github.com/container-orchestrated-devices/container-device-interface/specs-go"
"github.com/sirupsen/logrus"
)
type deviceFolderPermissions struct {
logger *logrus.Logger
root string
folders []string
logger *logrus.Logger
root string
nvidiaCTKPath string
folders []string
}
var _ discover.Discover = (*deviceFolderPermissions)(nil)
@@ -39,7 +39,7 @@ var _ discover.Discover = (*deviceFolderPermissions)(nil)
// The nested devices that are applicable to the NVIDIA GPU devices are:
// - DRM devices at /dev/dri/*
// - NVIDIA Caps devices at /dev/nvidia-caps/*
func NewDeviceFolderPermissionHookDiscoverer(logger *logrus.Logger, root string, deviceSpecs []specs.Device) (discover.Discover, error) {
func NewDeviceFolderPermissionHookDiscoverer(logger *logrus.Logger, root string, nvidiaCTKPath string, deviceSpecs []specs.Device) (discover.Discover, error) {
var folders []string
seen := make(map[string]bool)
for _, device := range deviceSpecs {
@@ -65,9 +65,10 @@ func NewDeviceFolderPermissionHookDiscoverer(logger *logrus.Logger, root string,
}
d := &deviceFolderPermissions{
logger: logger,
root: root,
folders: folders,
logger: logger,
root: root,
nvidiaCTKPath: nvidiaCTKPath,
folders: folders,
}
return d, nil
@@ -88,11 +89,9 @@ func (d *deviceFolderPermissions) Hooks() ([]discover.Hook, error) {
for _, folder := range d.folders {
args = append(args, "--path", folder)
}
hook := discover.CreateNvidiaCTKHook(
d.logger,
lookup.NewExecutableLocator(d.logger, d.root),
nvidiaCTKExecutable,
nvidiaCTKDefaultFilePath,
d.nvidiaCTKPath,
"chmod",
args...,
)

27
cmd/nvidia-ctk/cdi/generate/driver.go
View File

@@ -29,22 +29,23 @@ import (
)
type driverLibraries struct {
logger *logrus.Logger
root string
libraries []string
logger *logrus.Logger
root string
nvidiaCTKPath string
libraries []string
}
var _ discover.Discover = (*driverLibraries)(nil)
// NewDriverDiscoverer creates a discoverer for the libraries and binaries associated with a driver installation.
// The supplied NVML Library is used to query the expected driver version.
func NewDriverDiscoverer(logger *logrus.Logger, root string, nvmllib nvml.Interface) (discover.Discover, error) {
func NewDriverDiscoverer(logger *logrus.Logger, root string, nvidiaCTKPath string, nvmllib nvml.Interface) (discover.Discover, error) {
version, r := nvmllib.SystemGetDriverVersion()
if r != nvml.SUCCESS {
return nil, fmt.Errorf("failed to determine driver version: %v", r)
}
libraries, err := NewDriverLibraryDiscoverer(logger, root, version)
libraries, err := NewDriverLibraryDiscoverer(logger, root, nvidiaCTKPath, version)
if err != nil {
return nil, fmt.Errorf("failed to create discoverer for driver libraries: %v", err)
}
@@ -63,16 +64,17 @@ func NewDriverDiscoverer(logger *logrus.Logger, root string, nvmllib nvml.Interf
}
// NewDriverLibraryDiscoverer creates a discoverer for the libraries associated with the specified driver version.
func NewDriverLibraryDiscoverer(logger *logrus.Logger, root string, version string) (discover.Discover, error) {
func NewDriverLibraryDiscoverer(logger *logrus.Logger, root string, nvidiaCTKPath, version string) (discover.Discover, error) {
libraries, err := findVersionLibs(logger, root, version)
if err != nil {
return nil, fmt.Errorf("failed to get libraries for driver version: %v", err)
}
d := driverLibraries{
logger: logger,
root: root,
libraries: libraries,
logger: logger,
root: root,
nvidiaCTKPath: nvidiaCTKPath,
libraries: libraries,
}
return &d, nil
@@ -129,13 +131,8 @@ func (d *driverLibraries) Mounts() ([]discover.Mount, error) {
// Hooks returns a hook that updates the LDCache for the specified driver library paths.
func (d *driverLibraries) Hooks() ([]discover.Hook, error) {
locator := lookup.NewExecutableLocator(d.logger, d.root)
hook := discover.CreateLDCacheUpdateHook(
d.logger,
locator,
nvidiaCTKExecutable,
nvidiaCTKDefaultFilePath,
d.nvidiaCTKPath,
d.libraries,
)

33
cmd/nvidia-ctk/cdi/generate/full-gpu.go
View File

@@ -31,15 +31,16 @@ import (
// byPathHookDiscoverer discovers the entities required for injecting by-path DRM device links
type byPathHookDiscoverer struct {
logger *logrus.Logger
root string
pciBusID string
logger *logrus.Logger
root string
nvidiaCTKPath string
pciBusID string
}
var _ discover.Discover = (*byPathHookDiscoverer)(nil)
// NewFullGPUDiscoverer creates a discoverer for the full GPU defined by the specified device.
func NewFullGPUDiscoverer(logger *logrus.Logger, root string, d device.Device) (discover.Discover, error) {
func NewFullGPUDiscoverer(logger *logrus.Logger, root string, nvidiaCTKPath string, d device.Device) (discover.Discover, error) {
// TODO: The functionality to get device paths should be integrated into the go-nvlib/pkg/device.Device interface.
// This will allow reuse here and in other code where the paths are queried such as the NVIDIA device plugin.
minor, ret := d.GetMinorNumber()
@@ -68,9 +69,10 @@ func NewFullGPUDiscoverer(logger *logrus.Logger, root string, d device.Device) (
)
byPathHooks := &byPathHookDiscoverer{
logger: logger,
root: root,
pciBusID: pciBusID,
logger: logger,
root: root,
nvidiaCTKPath: nvidiaCTKPath,
pciBusID: pciBusID,
}
dd := discover.Merge(
@@ -98,21 +100,18 @@ func (d *byPathHookDiscoverer) Hooks() ([]discover.Hook, error) {
return nil, nil
}
hookPath := "nvidia-ctk"
args := []string{hookPath, "hook", "create-symlinks"}
var args []string
for _, l := range links {
args = append(args, "--link", l)
}
var hooks []discover.Hook
hook := discover.Hook{
Lifecycle: "createContainer",
Path: hookPath,
Args: args,
}
hooks = append(hooks, hook)
hook := discover.CreateNvidiaCTKHook(
d.nvidiaCTKPath,
"create-symlinks",
args...,
)
return hooks, nil
return []discover.Hook{hook}, nil
}
// Mounts returns an empty slice for a full GPU

53
cmd/nvidia-ctk/cdi/generate/generate.go
View File

@@ -25,6 +25,7 @@ import (
"github.com/NVIDIA/nvidia-container-toolkit/internal/discover"
"github.com/NVIDIA/nvidia-container-toolkit/internal/edits"
"github.com/NVIDIA/nvidia-container-toolkit/internal/lookup"
"github.com/container-orchestrated-devices/container-device-interface/pkg/cdi"
specs "github.com/container-orchestrated-devices/container-device-interface/specs-go"
"github.com/sirupsen/logrus"
@@ -47,9 +48,10 @@ type command struct {
}
type config struct {
output string
format string
root string
output string
format string
root string
nvidiaCTKPath string
}
// NewCommand constructs a generate-cdi command with the specified logger
@@ -93,6 +95,11 @@ func (m command) build() *cli.Command {
Usage: "Specify the root to use when discovering the entities that should be included in the CDI specification.",
Destination: &cfg.root,
},
&cli.StringFlag{
Name: "nvidia-ctk-path",
Usage: "Specify the path to use for the nvidia-ctk in the generated CDI specification. If this is left empty, the path will be searched.",
Destination: &cfg.nvidiaCTKPath,
},
}
return &c
@@ -111,7 +118,7 @@ func (m command) validateFlags(r *cli.Context, cfg *config) error {
}
func (m command) run(c *cli.Context, cfg *config) error {
spec, err := m.generateSpec(cfg.root)
spec, err := m.generateSpec(cfg.root, cfg.nvidiaCTKPath)
if err != nil {
return fmt.Errorf("failed to generate CDI spec: %v", err)
}
@@ -161,6 +168,30 @@ func (m command) run(c *cli.Context, cfg *config) error {
return nil
}
// findNvidiaCTK locates the nvidia-ctk executable to be used in hooks.
// If an override is specified, this is used instead.
func (m command) findNvidiaCTK(override string) string {
if override != "" {
m.logger.Debugf("Using specified NVIDIA Container Toolkit CLI path %v", override)
return override
}
lookup := lookup.NewExecutableLocator(m.logger, "")
hookPath := nvidiaCTKDefaultFilePath
targets, err := lookup.Locate(nvidiaCTKExecutable)
if err != nil {
m.logger.Warnf("Failed to locate %v: %v", nvidiaCTKExecutable, err)
} else if len(targets) == 0 {
m.logger.Warnf("%v not found", nvidiaCTKExecutable)
} else {
m.logger.Debugf("Found %v candidates: %v", nvidiaCTKExecutable, targets)
hookPath = targets[0]
}
m.logger.Debugf("Using NVIDIA Container Toolkit CLI path %v", hookPath)
return hookPath
}
func formatFromFilename(filename string) string {
ext := filepath.Ext(filename)
switch strings.ToLower(ext) {
@@ -190,7 +221,7 @@ func writeToOutput(format string, data []byte, output io.Writer) error {
return nil
}
func (m command) generateSpec(root string) (*specs.Spec, error) {
func (m command) generateSpec(root string, nvidiaCTKPath string) (*specs.Spec, error) {
nvmllib := nvml.New()
if r := nvmllib.Init(); r != nvml.SUCCESS {
return nil, r
@@ -199,7 +230,9 @@ func (m command) generateSpec(root string) (*specs.Spec, error) {
devicelib := device.New(device.WithNvml(nvmllib))
deviceSpecs, err := m.generateDeviceSpecs(devicelib, root)
useNvidiaCTKPath := m.findNvidiaCTK(nvidiaCTKPath)
deviceSpecs, err := m.generateDeviceSpecs(devicelib, root, useNvidiaCTKPath)
if err != nil {
return nil, fmt.Errorf("failed to create device CDI specs: %v", err)
}
@@ -226,12 +259,12 @@ func (m command) generateSpec(root string) (*specs.Spec, error) {
allEdits.Append(ipcEdits)
common, err := NewCommonDiscoverer(m.logger, root, nvmllib)
common, err := NewCommonDiscoverer(m.logger, root, nvidiaCTKPath, nvmllib)
if err != nil {
return nil, fmt.Errorf("failed to create discoverer for common entities: %v", err)
}
deviceFolderPermissionHooks, err := NewDeviceFolderPermissionHookDiscoverer(m.logger, root, deviceSpecs)
deviceFolderPermissionHooks, err := NewDeviceFolderPermissionHookDiscoverer(m.logger, root, nvidiaCTKPath, deviceSpecs)
if err != nil {
return nil, fmt.Errorf("failed to generated permission hooks for device nodes: %v", err)
}
@@ -255,7 +288,7 @@ func (m command) generateSpec(root string) (*specs.Spec, error) {
return &spec, nil
}
func (m command) generateDeviceSpecs(devicelib device.Interface, root string) ([]specs.Device, error) {
func (m command) generateDeviceSpecs(devicelib device.Interface, root string, nvidiaCTKPath string) ([]specs.Device, error) {
var deviceSpecs []specs.Device
err := devicelib.VisitDevices(func(i int, d device.Device) error {
@@ -266,7 +299,7 @@ func (m command) generateDeviceSpecs(devicelib device.Interface, root string) ([
if isMigEnabled {
return nil
}
device, err := NewFullGPUDiscoverer(m.logger, root, d)
device, err := NewFullGPUDiscoverer(m.logger, root, nvidiaCTKPath, d)
if err != nil {
return fmt.Errorf("failed to create device: %v", err)
}