Hey @learner,
I have analyzed the full log. Here are the findings:
1. SMB 3.11 Discovery Failures
Volumio is attempting SMB share discovery with the problematic SMB3_11 protocol:
Dec 27 20:38:21 volumiored volumio[996]: info: Executing SMB command: smbclient --no-pass --debuglevel=0 -L DiskStation3.local. -m SMB3_11
...
Dec 27 20:38:27 volumiored volumio[996]: info: Error browsing device DiskStation3 for shares: Command failed
This is the known Bookworm/kernel 6.12 SMB regression. SMB 3.11 introduces encrypted sessions and metadata overhead causing severe performance degradation. Even though your music mount uses NFS, these failing SMB discovery commands block the UI.
2. Synology #recycle Folder Being Indexed
MPD is scanning thousands of files from your NAS trash bin:
2025-12-27T20:39:43 update: added NAS/NAS/#recycle/ROCK MUSIC N-Z/...
2025-12-27T20:39:43 update: added NAS/NAS/#recycle/НАШИ/Рок/Ария/...
This wastes significant scan time on deleted files.
3. UTF-8 Encoding Failure with Cyrillic
NAS/NAS/#recycle/НАШИ/\xd0 ок/Ария/mp3/2003 Легенды \xd0 усского рока
This should display as “Рок” and “Русского”. The broken UTF-8 sequences indicate encoding negotiation failure.
4. MPD Exception at Startup
2025-12-27T20:37:52 exception: No such directory
MPD references a directory that no longer exists on the NAS.
Recommended Actions:
- Check NFS mount encoding settings:
Go to Settings > Sources > Network Drives > Edit your NAS mount > Advanced Options
Verify or add: iocharset=utf8
- For any CIFS/SMB mounts or future additions:
In Advanced Options, specify: vers=2.0 or vers=2.1
Do NOT use vers=3.0 or vers=3.11 - these cause the performance regression.
- Create .mpdignore to exclude #recycle and Synology metadata:
ssh volumio@volumio.local
echo "#recycle" | sudo tee /mnt/NAS/NAS/.mpdignore
echo "@eaDir" | sudo tee -a /mnt/NAS/NAS/.mpdignore
- After adding .mpdignore, rebuild the database:
sudo rm /var/lib/mpd/tag_cache
sudo systemctl restart mpd
- Trigger rescan from Volumio UI and send new log.
Questions:
- How much content is in #recycle? This could represent a large portion of your 420,000 tracks.
- Do you need DiskStation3 and DiskStation4 visible in Volumio? If not, removing unused SMB shares from Sources would eliminate the discovery failures.
- How much RAM does the CM4 have?
Kind Regards,