mirror of
https://github.com/ceph/ceph-csi.git
synced 2024-09-19 23:19:52 +00:00
133 lines
3.7 KiB
Go
133 lines
3.7 KiB
Go
/*
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Copyright 2018 The Kubernetes Authors.
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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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http://www.apache.org/licenses/LICENSE-2.0
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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 rbd
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import (
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"fmt"
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"os"
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"strings"
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"github.com/golang/glog"
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"golang.org/x/net/context"
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"github.com/container-storage-interface/spec/lib/go/csi"
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"google.golang.org/grpc/codes"
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"google.golang.org/grpc/status"
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"k8s.io/kubernetes/pkg/util/mount"
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"github.com/kubernetes-csi/drivers/pkg/csi-common"
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)
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type nodeServer struct {
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*csicommon.DefaultNodeServer
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}
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func (ns *nodeServer) NodePublishVolume(ctx context.Context, req *csi.NodePublishVolumeRequest) (*csi.NodePublishVolumeResponse, error) {
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targetPath := req.GetTargetPath()
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if !strings.HasSuffix(targetPath, "/mount") {
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return nil, fmt.Errorf("rnd: malformed the value of target path: %s", targetPath)
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}
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s := strings.Split(strings.TrimSuffix(targetPath, "/mount"), "/")
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volName := s[len(s)-1]
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notMnt, err := mount.New("").IsLikelyNotMountPoint(targetPath)
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if err != nil {
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if os.IsNotExist(err) {
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if err = os.MkdirAll(targetPath, 0750); err != nil {
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return nil, status.Error(codes.Internal, err.Error())
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}
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notMnt = true
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} else {
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return nil, status.Error(codes.Internal, err.Error())
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}
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}
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if !notMnt {
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return &csi.NodePublishVolumeResponse{}, nil
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}
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volOptions, err := getRBDVolumeOptions(req.VolumeAttributes)
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if err != nil {
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return nil, err
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}
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volOptions.VolName = volName
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// Mapping RBD image
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devicePath, err := attachRBDImage(volOptions)
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if err != nil {
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return nil, err
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}
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glog.V(4).Infof("rbd image: %s/%s was succesfully mapped at %s\n", req.GetVolumeId(), volOptions.Pool, devicePath)
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fsType := req.GetVolumeCapability().GetMount().GetFsType()
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readOnly := req.GetReadonly()
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attrib := req.GetVolumeAttributes()
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mountFlags := req.GetVolumeCapability().GetMount().GetMountFlags()
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glog.V(4).Infof("target %v\nfstype %v\ndevice %v\nreadonly %v\nattributes %v\n mountflags %v\n",
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targetPath, fsType, devicePath, readOnly, attrib, mountFlags)
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options := []string{}
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if readOnly {
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options = append(options, "ro")
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}
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diskMounter := &mount.SafeFormatAndMount{Interface: mount.New(""), Exec: mount.NewOsExec()}
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if err := diskMounter.FormatAndMount(devicePath, targetPath, fsType, options); err != nil {
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return nil, err
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}
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return &csi.NodePublishVolumeResponse{}, nil
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}
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func (ns *nodeServer) NodeUnpublishVolume(ctx context.Context, req *csi.NodeUnpublishVolumeRequest) (*csi.NodeUnpublishVolumeResponse, error) {
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targetPath := req.GetTargetPath()
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mounter := mount.New("")
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notMnt, err := mounter.IsLikelyNotMountPoint(targetPath)
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if err != nil {
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return nil, status.Error(codes.Internal, err.Error())
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}
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if notMnt {
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return nil, status.Error(codes.NotFound, "Volume not mounted")
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}
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devicePath, cnt, err := mount.GetDeviceNameFromMount(mounter, targetPath)
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if err != nil {
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return nil, status.Error(codes.Internal, err.Error())
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}
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// Unmounting the image
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err = mounter.Unmount(targetPath)
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if err != nil {
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return nil, status.Error(codes.Internal, err.Error())
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}
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cnt--
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if cnt != 0 {
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return &csi.NodeUnpublishVolumeResponse{}, nil
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}
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// Unmapping rbd device
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if err := detachRBDDevice(devicePath); err != nil {
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glog.V(3).Infof("failed to unmap rbd device: %s with error: %v", devicePath, err)
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return nil, err
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}
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return &csi.NodeUnpublishVolumeResponse{}, nil
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}
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