Source: https://www.abrandao.com/2022/01/fix-mo ... orted-smb/
Fix mount error(95): solved! Operation not supported SMB
Mounts SMB/CIFS shares with Linux
It’s common practice to mount Windows file shares on Linux using the SMB (Samba) implementation on Linux. the command is fairly straight forward.
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# Install the required libraries if you haven't done that yet
sudo apt update
sudo apt install cifs-utils
#Next mount the folder you want
sudo mount -t cifs -o username=user_name //server_name_or_ip/share_name /mnt/share_nameThe command above would:
mount a server with the server_name or ip in the //server_name/share_name
to a local /mnt/share_name folder
so once the mount is complete you can access the shares contents by accessing the /mnt/share_name folder locally.
There are all sorts of options using this command , and when the share is created on the server , things like file access and permissions can be set. You can find a more complete description here on how to access and setup windows shares in Linux
The issue with Samba/Cifs mounts (on Synology and other SMB servers) error 95
Apparently there has been a change to the SMB (Samba) protocol . Or more specifically in my case, Synology updated their SMB server and increased the security , and for those of us that do not keep up to date with the changes may find that our once working mount commands, are not failing with a message such as ..
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mount error(95): Operation not supportedThis obscure message with its “operation not supported” doesn’t shed light on the true cause of the issue. Online documentation is I was able to find online such as this Samba.Org mount.cifs document doesn’t really help much either. The trick is you can try dmesg to give you a more precise message.
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mount error(95): Operation not supported
Refer to the mount.cifs(8) manual page (e.g. man mount.cifs) and kernel log messages (dmesg)You can try dmesg to give you a more precise message
CIFS: VFS: Use of the less secure dialect ver=1.0 is not
recommended unless required for access to very old servers
CIFS: VFS: cifs_mount failed w/return code = -95
So if you haven’t a version set in your configuration (Your connection string) it will assume your client uses SMB1 as default, which may not be sufficient if the server you’re trying to connect to has upgraded there requirement to SMB2 . So try setting the version to SMB2 with vers=2.0 to see if it resolves the issue, as it did in my case,
So my Old error connection string
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sudo mount -t cifs -o username=user_name //server_name/share_name /mnt/share_nameRevised working connection string. use vers=2.0 as part of your -0 witch attributes.
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sudo mount -t cifs -o vers=2.0,username=user_name,password=password //server_name/share_name /mnt/share_nameAnyways this was just a quick post as it was a pain in the ass as to why all of a sudden my mounts to my Synology began failing.. hope it helps.
If you found this post useful , leave a comment below!