Re: TOS 7.0 Beta: Boot hang, internal array drop (mdadm DeviceDisappeared), and Web UI failure on F8 NVMe
Posted: 22 May 2026, 16:41
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For those who have experienced issues with SMB sharing while VPN is active on the PC, after several attempts I managed to solve the problem by enabling the **Discovery Service**, in particular the following options:Riccobono67 wrote: ↑21 May 2026, 18:18Hello,CursaYang wrote: ↑21 May 2026, 09:16Our internal tests show no lag issues when transferring files via SMB. Does the 2GB file you're transferring have a specific format?
Additionally, you can try temporarily disabling SMB multichannel and VFS MAC, then clearing the Windows SMB connection, and then testing the transfer again.
regarding an issue that appeared after updating the firmware to release 7.0.0601 on my TerraMaster F6-424 MAX (IP 192.168.20.109). Before the update (rel. 7.0.0567) I did not experience any anomalies.
Environment description:
NAS 1: QNAP TS-1685, IP 192.168.20.100. Shares three folders; one of these receives the backup from the TerraMaster.
NAS 2: TerraMaster F6-424 MAX, IP 192.168.20.109. Shares three folders with three PCs, Qnap and various devices.
Three PCs on the network have an active VPN that bypasses the local network for the NAS devices.
Jellyfin has been installed on the TerraMaster since purchase.
Symptoms observed after the update:
Any activity on the TerraMaster shared folders experiences micro-interruptions and freezes.
Video playback with VLC from SMB paths on the TerraMaster shows frequent interruptions and is not smooth.
File transfers to/from the TerraMaster show variable speeds up to zero throughput.
Disabling the VPN on one of the PCs reduces the issue but a slowdown is still noticeable.
The backup from the QNAP of the TerraMaster folder shows delays after the update.
FTP operations between the TerraMaster and the PCs do not present problems.
Streaming via Jellyfin (direct server streaming to TV, browser, smartphone, iPad, or laptops with the Jellyfin app) works correctly without interruptions. The issue appears only when accessing the same folder via SMB (e.g., VLC on PC).
The same file and operations on the QNAP (with or without VPN) do not show the issue.
Preliminary actions I intend to perform / plan to try:
Temporarily disable SMB Multichannel and VFS MAC on the TerraMaster.
Remove and recreate the SMB connection on Windows, then retest transfers.
Support request:
Could you tell me which logs or diagnostics to collect to assist your analysis (e.g., SMB logs, system logs, packet captures)?
Are there known settings introduced in 7.0.0601 that could cause these symptoms, particularly when VPNs are active on clients?
Any recommendations for further tests to perform (e.g., test SMBv2 vs SMBv3, temporarily disable SMB signing, check VPN MTU/keepalive)?
Is a patch or recommended rollback planned if this release is confirmed as the cause?
I am available to send logs, configuration files, or run tests by appointment. Thank you for your help.
Best regards,
Cesare Riccobono

This has been added to the bug tracker. We will review and fix it as soon as possible. Thank you again for reporting the issue.