| // Package commands implements subcommands of cos_gpu_installer. |
| package commands |
| |
| import ( |
| "context" |
| "fmt" |
| "io/ioutil" |
| "os" |
| "path/filepath" |
| |
| "flag" |
| |
| "cos.googlesource.com/cos/tools.git/src/cmd/cos_gpu_installer/internal/installer" |
| "cos.googlesource.com/cos/tools.git/src/cmd/cos_gpu_installer/internal/signing" |
| "cos.googlesource.com/cos/tools.git/src/pkg/cos" |
| "cos.googlesource.com/cos/tools.git/src/pkg/modules" |
| |
| log "github.com/golang/glog" |
| "github.com/google/subcommands" |
| "github.com/pkg/errors" |
| ) |
| |
| const ( |
| hostRootPath = "/root" |
| kernelSrcDir = "/build/usr/src/linux" |
| kernelHeaderDir = "/build/usr/src/linux-headers" |
| toolchainPkgDir = "/build/cos-tools" |
| ) |
| |
| // InstallCommand is the subcommand to install GPU drivers. |
| type InstallCommand struct { |
| driverVersion string |
| hostInstallDir string |
| unsignedDriver bool |
| internalDownload bool |
| debug bool |
| } |
| |
| // Name implements subcommands.Command.Name. |
| func (*InstallCommand) Name() string { return "install" } |
| |
| // Synopsis implements subcommands.Command.Synopsis. |
| func (*InstallCommand) Synopsis() string { return "Install GPU drivers." } |
| |
| // Usage implements subcommands.Command.Usage. |
| func (*InstallCommand) Usage() string { return "install [-dir <filepath>]\n" } |
| |
| // SetFlags implements subcommands.Command.SetFlags. |
| func (c *InstallCommand) SetFlags(f *flag.FlagSet) { |
| f.StringVar(&c.driverVersion, "version", "", |
| "The GPU driver verion to install. It will install the default GPU driver if the flag is not set explicitly.") |
| f.StringVar(&c.hostInstallDir, "host-dir", "", |
| "Host directory that GPU drivers should be installed to. "+ |
| "It tries to read from the env NVIDIA_INSTALL_DIR_HOST if the flag is not set explicitly.") |
| f.BoolVar(&c.unsignedDriver, "allow-unsigned-driver", false, |
| "Whether to allow load unsigned GPU drivers. "+ |
| "If this flag is set to true, module signing security features must be disabled on the host for driver installation to succeed. "+ |
| "This flag is only for debugging.") |
| // TODO(mikewu): change this flag to a bucket prefix string. |
| f.BoolVar(&c.internalDownload, "internal-download", false, |
| "Whether to try to download files from Google internal server. This is only useful for internal developing.") |
| f.BoolVar(&c.debug, "debug", false, |
| "Enable debug mode.") |
| } |
| |
| // Execute implements subcommands.Command.Execute. |
| func (c *InstallCommand) Execute(ctx context.Context, _ *flag.FlagSet, _ ...interface{}) subcommands.ExitStatus { |
| envReader, err := cos.NewEnvReader(hostRootPath) |
| if err != nil { |
| c.logError(errors.Wrapf(err, "failed to create envReader with host root path %s", hostRootPath)) |
| return subcommands.ExitFailure |
| } |
| |
| log.Infof("Running on COS build id %s", envReader.BuildNumber()) |
| |
| downloader := cos.NewGCSDownloader(envReader, c.internalDownload) |
| if c.driverVersion == "" { |
| defaultVersion, err := installer.GetDefaultGPUDriverVersion(downloader) |
| if err != nil { |
| c.logError(errors.Wrap(err, "failed to get default driver version")) |
| return subcommands.ExitFailure |
| } |
| c.driverVersion = defaultVersion |
| } |
| log.Infof("Installing GPU driver version %s", c.driverVersion) |
| |
| if c.unsignedDriver { |
| kernelCmdline, err := ioutil.ReadFile("/proc/cmdline") |
| if err != nil { |
| c.logError(fmt.Errorf("failed to read kernel command line: %v", err)) |
| } |
| if !cos.CheckKernelModuleSigning(string(kernelCmdline)) { |
| log.Warning("Current kernel command line does not support unsigned kernel modules. Not enforcing kernel module signing may cause installation fail.") |
| } |
| } |
| |
| // Read value from env NVIDIA_INSTALL_DIR_HOST if the flag is not set. This is to be compatible with old interface. |
| if c.hostInstallDir == "" { |
| c.hostInstallDir = os.Getenv("NVIDIA_INSTALL_DIR_HOST") |
| } |
| hostInstallDir := filepath.Join(hostRootPath, c.hostInstallDir) |
| cacher := installer.NewCacher(hostInstallDir, envReader.BuildNumber(), c.driverVersion) |
| if isCached, err := cacher.IsCached(); isCached && err == nil { |
| log.Info("Found cached version, NOT building the drivers.") |
| if err := installer.ConfigureCachedInstalltion(hostInstallDir, !c.unsignedDriver); err != nil { |
| c.logError(errors.Wrap(err, "failed to configure cached installation")) |
| return subcommands.ExitFailure |
| } |
| if err := installer.VerifyDriverInstallation(); err != nil { |
| c.logError(errors.Wrap(err, "failed to verify GPU driver installation")) |
| return subcommands.ExitFailure |
| } |
| if err := modules.UpdateHostLdCache(hostRootPath, filepath.Join(c.hostInstallDir, "lib64")); err != nil { |
| c.logError(errors.Wrap(err, "failed to update host ld cache")) |
| return subcommands.ExitFailure |
| } |
| return subcommands.ExitSuccess |
| } |
| |
| log.Info("Did not find cached version, installing the drivers...") |
| if err := installDriver(c, cacher, envReader, downloader); err != nil { |
| c.logError(err) |
| return subcommands.ExitFailure |
| } |
| |
| return subcommands.ExitSuccess |
| } |
| |
| func installDriver(c *InstallCommand, cacher *installer.Cacher, envReader *cos.EnvReader, downloader *cos.GCSDownloader) error { |
| callback, err := installer.ConfigureDriverInstallationDirs(filepath.Join(hostRootPath, c.hostInstallDir), envReader.KernelRelease()) |
| if err != nil { |
| return errors.Wrap(err, "failed to configure GPU driver installation dirs") |
| } |
| defer func() { callback <- 0 }() |
| |
| if !c.unsignedDriver { |
| if err := signing.DownloadDriverSignatures(downloader, c.driverVersion); err != nil { |
| return errors.Wrap(err, "failed to download driver signature") |
| } |
| } |
| |
| installerFile, err := installer.DownloadDriverInstaller( |
| c.driverVersion, envReader.Milestone(), envReader.BuildNumber()) |
| if err != nil { |
| return errors.Wrap(err, "failed to download GPU driver installer") |
| } |
| |
| if err := cos.SetCompilationEnv(downloader); err != nil { |
| return errors.Wrap(err, "failed to set compilation environment variables") |
| } |
| if err := cos.InstallCrossToolchain(downloader, toolchainPkgDir); err != nil { |
| return errors.Wrap(err, "failed to install toolchain") |
| } |
| |
| if err := installer.RunDriverInstaller(installerFile, !c.unsignedDriver); err != nil { |
| return errors.Wrap(err, "failed to run GPU driver installer") |
| } |
| if err := cacher.Cache(); err != nil { |
| return errors.Wrap(err, "failed to cache installation") |
| } |
| if err := installer.VerifyDriverInstallation(); err != nil { |
| return errors.Wrap(err, "failed to verify installation") |
| } |
| if err := modules.UpdateHostLdCache(hostRootPath, filepath.Join(c.hostInstallDir, "lib64")); err != nil { |
| return errors.Wrap(err, "failed to update host ld cache") |
| } |
| log.Info("Finished installing the drivers.") |
| return nil |
| } |
| |
| func (c *InstallCommand) logError(err error) { |
| if c.debug { |
| log.Errorf("%+v", err) |
| } else { |
| log.Errorf("%v", err) |
| } |
| } |