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https://github.com/ceph/ceph-csi.git
synced 2024-11-22 14:20:19 +00:00
Fix pv deletion issue caused by not dettaching due to wrong mount count
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parent
5867d495fd
commit
ea75a9d162
@ -60,9 +60,7 @@ func (ns *nodeServer) NodePublishVolume(ctx context.Context, req *csi.NodePublis
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}
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// Check if that target path exists properly
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// IsLikelyNotMountPoint doesn't return right result to bind mount of device file
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// TODO: Need to fix this to a proper check
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notMnt, err := ns.mounter.IsLikelyNotMountPoint(targetPath)
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notMnt, err := ns.mounter.IsNotMountPoint(targetPath)
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if err != nil {
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if os.IsNotExist(err) {
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if isBlock {
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@ -137,10 +135,7 @@ func (ns *nodeServer) NodeUnpublishVolume(ctx context.Context, req *csi.NodeUnpu
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targetPathMutex.LockKey(targetPath)
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defer targetPathMutex.UnlockKey(targetPath)
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// IsLikelyNotMountPoint doesn't return right result to bind mount of device file
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// So, just use it to check if file exists, not a mount point
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// TODO: Need to fix this to a proper check
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_, err := ns.mounter.IsLikelyNotMountPoint(targetPath)
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notMnt, err := ns.mounter.IsNotMountPoint(targetPath)
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if err != nil {
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if os.IsNotExist(err) {
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// targetPath has already been deleted
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@ -149,12 +144,34 @@ func (ns *nodeServer) NodeUnpublishVolume(ctx context.Context, req *csi.NodeUnpu
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}
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return nil, status.Error(codes.NotFound, err.Error())
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}
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if notMnt {
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// TODO should consider deleting path instead of returning error,
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// once all codes become ready for csi 1.0.
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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(ns.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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// Bind mounted device needs to be resolved by using resolveBindMountedBlockDevice
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if devicePath == "devtmpfs" {
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var err error
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devicePath, err = resolveBindMountedBlockDevice(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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glog.V(4).Infof("NodeUnpublishVolume: devicePath: %s, (original)cnt: %d\n", devicePath, cnt)
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// cnt for GetDeviceNameFromMount is broken for bind mouted device,
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// it counts total number of mounted "devtmpfs", instead of counting this device.
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// So, forcibly setting cnt to 1 here.
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// TODO : fix this properly
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cnt = 1
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}
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glog.V(4).Infof("NodeUnpublishVolume: targetPath: %s, devicePath: %s\n", targetPath, devicePath)
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// Unmounting the image
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err = ns.mounter.Unmount(targetPath)
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if err != nil {
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@ -164,6 +181,7 @@ func (ns *nodeServer) NodeUnpublishVolume(ctx context.Context, req *csi.NodeUnpu
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cnt--
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if cnt != 0 {
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// TODO should this be fixed not to success, so that driver can retry unmounting?
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return &csi.NodeUnpublishVolumeResponse{}, nil
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}
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