Complete library rescan after adding new share

If I add new share to library Volumio starts complete re-scan of all shares, not only new one. This is very inconvenient because it takes around 5 hours for me (approx 35000 songs). I don’t know how to stop library scan without restart, so if one knows how, it would be great to know.

Sorry it may not be complete re-scan but it lasted for about 2 hours after adding new share with only one album with 13 songs.