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koordlet: rdma device inject (koordinator-sh#2285)
Signed-off-by: [email protected] <[email protected]> Signed-off-by: wangjianyu.wjy <[email protected]>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,165 @@ | ||
| /* | ||
| Copyright 2022 The Koordinator Authors. | ||
| Licensed under the Apache License, Version 2.0 (the "License"); | ||
| you may not use this file except in compliance with the License. | ||
| You may obtain a copy of the License at | ||
| http://www.apache.org/licenses/LICENSE-2.0 | ||
| Unless required by applicable law or agreed to in writing, software | ||
| distributed under the License is distributed on an "AS IS" BASIS, | ||
| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| See the License for the specific language governing permissions and | ||
| limitations under the License. | ||
| */ | ||
|
|
||
| package rdma | ||
|
|
||
| import ( | ||
| "fmt" | ||
| "os" | ||
| "path/filepath" | ||
| "syscall" | ||
|
|
||
| "k8s.io/klog/v2" | ||
|
|
||
| ext "github.com/koordinator-sh/koordinator/apis/extension" | ||
| schedulingv1alpha1 "github.com/koordinator-sh/koordinator/apis/scheduling/v1alpha1" | ||
| "github.com/koordinator-sh/koordinator/pkg/koordlet/runtimehooks/hooks" | ||
| "github.com/koordinator-sh/koordinator/pkg/koordlet/runtimehooks/protocol" | ||
| rmconfig "github.com/koordinator-sh/koordinator/pkg/runtimeproxy/config" | ||
| ) | ||
|
|
||
| const ( | ||
| IBDevDir = "/dev/infiniband" | ||
| RdmaCmDir = "/dev/infiniband/rdma_cm" | ||
| SysBusPci = "/sys/bus/pci/devices" | ||
| ) | ||
|
|
||
| type rdmaPlugin struct{} | ||
|
|
||
| func (p *rdmaPlugin) Register(op hooks.Options) { | ||
| klog.V(5).Infof("register hook %v", "rdma device inject") | ||
| hooks.Register(rmconfig.PreCreateContainer, "rdma device inject", "inject NVIDIA_VISIBLE_DEVICES env into container", p.InjectDevice) | ||
| } | ||
|
|
||
| var singleton *rdmaPlugin | ||
|
|
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| func Object() *rdmaPlugin { | ||
| if singleton == nil { | ||
| singleton = &rdmaPlugin{} | ||
| } | ||
| return singleton | ||
| } | ||
|
|
||
| func (p *rdmaPlugin) InjectDevice(proto protocol.HooksProtocol) error { | ||
| containerCtx := proto.(*protocol.ContainerContext) | ||
| if containerCtx == nil { | ||
| return fmt.Errorf("container protocol is nil for plugin gpu") | ||
| } | ||
| containerReq := containerCtx.Request | ||
| alloc, err := ext.GetDeviceAllocations(containerReq.PodAnnotations) | ||
| if err != nil { | ||
| klog.Errorf("InjectDevice: GetDeviceAllocations error:%v", err) | ||
| return err | ||
| } | ||
| devices, ok := alloc[schedulingv1alpha1.RDMA] | ||
| if !ok || len(devices) == 0 { | ||
| klog.V(5).Infof("no rdma alloc info in pod anno, %s", containerReq.PodMeta.Name) | ||
| return nil | ||
| } | ||
|
|
||
| deviceInfoCM, err := getDeviceNumbers(RdmaCmDir) | ||
| if err != nil { | ||
| klog.Errorf("InjectDevice: GetDeviceNumbers deviceinfoCM from %s error:%v", RdmaCmDir, err) | ||
| return err | ||
| } | ||
|
|
||
| containerCtx.Response.AddContainerDevices = []*protocol.LinuxDevice{ | ||
| { | ||
| Path: RdmaCmDir, | ||
| Type: "c", | ||
| Major: deviceInfoCM[0], | ||
| Minor: deviceInfoCM[1], | ||
| FileModeValue: 0666, | ||
| }, | ||
| } | ||
|
|
||
| for _, device := range devices { | ||
| // Both VF and PF of the same device are not allowed | ||
| if device.Extension != nil && device.Extension.VirtualFunctions != nil && len(device.Extension.VirtualFunctions) > 0 { | ||
| for _, vf := range device.Extension.VirtualFunctions { | ||
| uverbsOfVF, err := getUVerbsViaPciAdd(vf.BusID) | ||
| if err != nil { | ||
| klog.Errorf("InjectDevice: getUVerbsViaPciAdd uverbsOfVF error:%v", err) | ||
| return err | ||
| } | ||
|
|
||
| deviceInfoVf, err := getDeviceNumbers(uverbsOfVF) | ||
| if err != nil { | ||
| klog.Errorf("InjectDevice: GetDeviceNumbers deviceinfoVf from %s error:%v", uverbsOfVF, err) | ||
| return err | ||
| } | ||
| containerCtx.Response.AddContainerDevices = append(containerCtx.Response.AddContainerDevices, | ||
| &protocol.LinuxDevice{ | ||
| Path: uverbsOfVF, | ||
| Major: deviceInfoVf[0], | ||
| Minor: deviceInfoVf[1], | ||
| Type: "c", | ||
| FileModeValue: 0666, | ||
| }) | ||
| } | ||
| continue | ||
| } | ||
|
|
||
| uverbs, err := getUVerbsViaPciAdd(device.ID) | ||
| if err != nil { | ||
| klog.Errorf("InjectDevice: getUVerbsViaPciAdd error:%v", err) | ||
| return err | ||
| } | ||
| deviceInfoPf, err := getDeviceNumbers(uverbs) | ||
| if err != nil { | ||
| klog.Errorf("InjectDevice: GetDeviceNumbers deviceinfoPf from %s error:%v", uverbs, err) | ||
| return err | ||
| } | ||
| containerCtx.Response.AddContainerDevices = append(containerCtx.Response.AddContainerDevices, | ||
| &protocol.LinuxDevice{ | ||
| Path: uverbs, | ||
| Major: deviceInfoPf[0], | ||
| Minor: deviceInfoPf[1], | ||
| Type: "c", | ||
| FileModeValue: 0666, | ||
| }) | ||
| } | ||
| klog.V(4).Infof("InjectDevice: AddContainerDevices: %v", containerCtx.Response.AddContainerDevices) | ||
| return nil | ||
| } | ||
|
|
||
| func getUVerbsViaPciAdd(pciAddress string) (string, error) { | ||
| pciDir := filepath.Join(SysBusPci, pciAddress, "infiniband_verbs") | ||
| files, err := os.ReadDir(pciDir) | ||
| if err != nil || len(files) == 0 { | ||
| return "", fmt.Errorf("failed to get uverbs: %s", err.Error()) | ||
| } | ||
| return filepath.Join(IBDevDir, files[0].Name()), nil | ||
| } | ||
|
|
||
| func major(dev uint64) int64 { | ||
| return int64((dev>>8)&0xff) | int64((dev>>12)&0xfff00) | ||
| } | ||
|
|
||
| func minor(dev uint64) int64 { | ||
| return int64(dev&0xff) | int64((dev>>12)&0xffffff00) | ||
| } | ||
|
|
||
| func getDeviceNumbers(devicePath string) ([]int64, error) { | ||
| fileInfo, err := os.Stat(devicePath) | ||
| if err != nil { | ||
| return nil, fmt.Errorf("failed to stat device file: %v", err) | ||
| } | ||
| deviceNumber := fileInfo.Sys().(*syscall.Stat_t).Rdev | ||
| major := major(deviceNumber) | ||
| minor := minor(deviceNumber) | ||
| return []int64{major, minor}, nil | ||
| } |
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