TerraMaster Forum

I hope someone is still interested on this.

I did change my POV and searched for the error that Finder gives when you try to "access" the file (i.e. renaming it) "An unexpected error occurred (error code -43)". I did find an old post on another NAS manufacturer site pointing exactly to that error "Sometimes I get an error code -43 when attempting to access files in a shared folder while using Finder in macOS via SMB. What causes this?" and the solution really worked.

Other Forum wrote:This happens because the character “à” is encoded using Normalization Form D (NFD), which is the “Canonical Decomposition” Unicode Normalization form.

On the client end, however, Finder sends the request using Normalization Form C (NFC), the “Canonical Composition” form. Therefore, the NAS server cannot recognize the directory name or find the directory, so the server reports the error.

It looks that copying files from an external exFAT USB disk to the internal TM volume and mounting that volume with SMB protocol on a OSX computer could somehow break filenames encoding and you just have to use convmv to re-encode that file names (I did it from the internal TNAS terminal, Perl was there and I just had to copy convmv perl script under the /usr/local/bin folder...)

Now I just have to find how to force Finder to re-read folder content as icon is still the generic audio but cmd-I shows all the MP3 data and cover.

I don't know what VFS module does but I think that it should do exactly this.

Thank you for your feedback!