Qnap : Problem maintaining CIFS mount from Ubuntu Virtual Machin Error Host is down

update Qnap To Version 4.3.3.0210 แล้วมีปัญหา Mount to ubuntu error Host is down

When it comes to the max SMB version - the control has not made it to the UI of the CAT1 systems, you need to call the readily available smb[N|NN]enable, and check the current settings using smb2status form the NAS shell:

Up to QTS 4.2.x, SMB 2.1 is the max available:

[~] # smb21enable
...

QTS 4.3.x will bring SMB up to the 3.0 subset available in SAMBA 4.4 to all QNAP Marvell Kirkwood NAS.

[~] # smb3enable
...

Check status:

[~] # smb2status

smbd (samba daemon) Version 4.4.9
smbd (samba daemon) is running.
max protocol SMB 3.0 enabled.

[~] # smb<TAB>
smb21enable smb2disable smb2enable smb2status smb3enable smbtools

reboot Qnap and mount again.

https://forum.qnap.com/viewtopic.php?t=132166

และเวลา Mount ต้องใส่ Version 3 ด้วย

1. sudo mount -t cifs -o username=xxx,password=xxx  vers=3.0 //192.168.0.218/backup /BACKUP/BackupToQnap/

https://forum.qnap.com/viewtopic.php?t=132166