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Change csi rbd to create/delete targetPath for publish/unpublish

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This commit is contained in:
Masaki Kimura 2018-11-15 02:06:42 +00:00 committed by Huamin Chen
parent 165b82a44c
commit 5867d495fd
1 changed files with 46 additions and 23 deletions
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51
pkg/rbd/nodeserver.go
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@ -50,19 +50,6 @@ func (ns *nodeServer) NodePublishVolume(ctx context.Context, req *csi.NodePublis
// Get volName from targetPath
s := strings.Split(targetPath, "/")
volName = s[len(s)-1]
// Check if that target path exists properly
// targetPath should exists and should be a file
st, err := os.Stat(targetPath)
if err != nil {
if os.IsNotExist(err) {
return nil, status.Error(codes.NotFound, "targetPath not mounted")
}
return nil, status.Error(codes.Internal, err.Error())
}
if !st.Mode().IsRegular() {
return nil, status.Error(codes.Internal, "targetPath is not regular file")
}
} else {
// Get volName from targetPath
if !strings.HasSuffix(targetPath, "/mount") {
@ -70,14 +57,31 @@ func (ns *nodeServer) NodePublishVolume(ctx context.Context, req *csi.NodePublis
}
s := strings.Split(strings.TrimSuffix(targetPath, "/mount"), "/")
volName = s[len(s)-1]
}
// Check if that target path exists properly
// IsLikelyNotMountPoint doesn't return right result to bind mount of device file
// TODO: Need to fix this to a proper check
notMnt, err := ns.mounter.IsLikelyNotMountPoint(targetPath)
if err != nil {
if os.IsNotExist(err) {
if isBlock {
// create an empty file
targetPathFile, err := os.OpenFile(targetPath, os.O_CREATE|os.O_RDWR, 0750)
if err != nil {
glog.V(4).Infof("Failed to create targetPath:%s with error: %v", targetPath, err)
return nil, status.Error(codes.Internal, err.Error())
}
if err := targetPathFile.Close(); err != nil {
glog.V(4).Infof("Failed to close targetPath:%s with error: %v", targetPath, err)
return nil, status.Error(codes.Internal, err.Error())
}
} else {
// Create a directory
if err = os.MkdirAll(targetPath, 0750); err != nil {
return nil, status.Error(codes.Internal, err.Error())
}
}
notMnt = true
} else {
return nil, status.Error(codes.Internal, err.Error())
@ -87,7 +91,6 @@ func (ns *nodeServer) NodePublishVolume(ctx context.Context, req *csi.NodePublis
if !notMnt {
return &csi.NodePublishVolumeResponse{}, nil
}
}
volOptions, err := getRBDVolumeOptions(req.GetVolumeContext())
if err != nil {
return nil, err
@ -134,6 +137,19 @@ func (ns *nodeServer) NodeUnpublishVolume(ctx context.Context, req *csi.NodeUnpu
targetPathMutex.LockKey(targetPath)
defer targetPathMutex.UnlockKey(targetPath)
// IsLikelyNotMountPoint doesn't return right result to bind mount of device file
// So, just use it to check if file exists, not a mount point
// TODO: Need to fix this to a proper check
_, err := ns.mounter.IsLikelyNotMountPoint(targetPath)
if err != nil {
if os.IsNotExist(err) {
// targetPath has already been deleted
glog.V(4).Infof("targetPath: %s has already been deleted", targetPath)
return &csi.NodeUnpublishVolumeResponse{}, nil
}
return nil, status.Error(codes.NotFound, err.Error())
}
devicePath, cnt, err := mount.GetDeviceNameFromMount(ns.mounter, targetPath)
if err != nil {
return nil, status.Error(codes.Internal, err.Error())
@ -142,6 +158,7 @@ func (ns *nodeServer) NodeUnpublishVolume(ctx context.Context, req *csi.NodeUnpu
// Unmounting the image
err = ns.mounter.Unmount(targetPath)
if err != nil {
glog.V(3).Infof("failed to unmount targetPath: %s with error: %v", targetPath, err)
return nil, status.Error(codes.Internal, err.Error())
}
@ -156,6 +173,12 @@ func (ns *nodeServer) NodeUnpublishVolume(ctx context.Context, req *csi.NodeUnpu
return nil, err
}
// Remove targetPath
if err := os.RemoveAll(targetPath); err != nil {
glog.V(3).Infof("failed to remove targetPath: %s with error: %v", targetPath, err)
return nil, err
}
return &csi.NodeUnpublishVolumeResponse{}, nil
}