WinFsp Network Mount Service: Cannot mount two filesystems with same volume name

[infeo]

The WinFsp network mount service has the capability VOLUME_NAME, which allows to set the drive name shown in the Windows Explorer.

But when mounting two different filesystems with the same volume name, mounting the second one fails with message to stdout:

Cannot create WinFsp-FUSE file system.
The service java has failed to start (Status=80070050).

I assume the error code is something like ALREADY_EXISTS, because in Windows there can only be one \\server\share at a given time and in our case server is a constant string and share is the volume name.

[infeo]

The minimum change required is to add the mount capability VOLUME_ID to the mounter and use it for the VolumePrefix option.

When using both volname and volumePrefix, the first one is ignored, so the volume name and volume id need to be used in the VolumePrefix` option.