topic Re: CIFS: Mount share on SLES with SMB 2.x does not work in Network and Storage Protocols

CIFS: Mount share on SLES with SMB 2.x does not work

sanadmin_stadtdo — Wed, 09 Aug 2017 08:18:56 GMT

Hello,

we trying to mount a NetApp CIFS share on SLES 11 with SMB 2.1 as follows:

Mount -v -o auto, username = xxxxxx, password = xxxxxx, workgroup = XXXXXX, uid = hostftp, gid = users, vers = 2.1, noserverino // <server> / <shared name> / <local_folder> / <local_subserver>

Mount and access work, but the mount seems to be done with SMB 1 only:

CLUSTER ::> vserver cifs sessionshow -vserver SVM_XXXXXXX -fields shares, windows-user, idle-time, session-id, address, protocol-version, user-type, files
Node vserver session-id connection-id address windows-user shares files idle-time protocol-version user-type
-------- ------------ ------------------------------------------------ ------- --------------- ------ ----- --------- -------- -------- -----------
NodeXX SVM_XXXXXXX 1 932666088 NNN.18.121.131 DOMAIN \ hostftp 2 0 1m 29s SMB1 domain-user

NodeXX SVM_XXXXXXX 12261331460493166545 932952775 NNN.NN.1.187 DOMAIN \ VNNNN1 2 3 21m 47s SMB2_1 domain-user
NodeXX SVM_XXXXXXX 12261331460493203961 932990989 NNN.NN.187.108 DOMAIN \ VNNNN2 1 9 5s SMB2_1 domain-user
NodeXX SVM_XXXXXXX 12261331460493216289 933003440 NNN.NN.84.10 DOMAIN \ vNNNN3 1 9 1m 56s SMB2_1 domain-user
:

Mounting CIFS-shares using SMB 2.1 works well on Windows-Clients (see above - windows-user: DOMAIN \ VNNNNx )

(System FAS8040 running ONTAP 9.1P3)

Any idea?
Thanks and best regards

Michael

Re: CIFS: Mount share on SLES with SMB 2.x does not work

ICT-Acea — Thu, 19 Oct 2017 09:21:33 GMT

Hi Michael,

SLES11 does not support SMB2 because it's not supported in kernel 3.0.101.

You must use SLES12 in order to mount SMB2.1.

Here you can see current SLES linux kerner version:

https://www.novell.com/support/kb/doc.php?id=3594951

Here you can see CIFS support based on kernel version:

https://wiki.samba.org/index.php/LinuxCIFSKernel

Best regards

Re: CIFS: Mount share on SLES with SMB 2.x does not work

tux — Thu, 01 Feb 2018 09:20:46 GMT

we use OnTAP 8.2.4 7-Mode and the newest SLES 12 SP3 but with SMB 2.0 /2.1 we can only use smbclient but not mount.cifs. We get always the problem:

mount error(95): Operation not supported
Refer to the mount.cifs(8) manual page (e.g. man mount.cifs)

and the kernel reports:

[10999.379311] CIFS VFS: ioctl error in smb2_get_dfs_refer rc=-2
[10999.384622] CIFS VFS: cifs_read_super: get root inode faile

we have opened a SUSE case which mentioned that we get something back from netapp filer which is wrong. Have anybody get it work?

Re: CIFS: Mount share on SLES with SMB 2.x does not work

clayton123 — Thu, 18 Jul 2019 12:36:27 GMT

We have the same issue, has there been a resolution?

Re: CIFS: Mount share on SLES with SMB 2.x does not work

liu — Mon, 12 May 2025 05:49:09 GMT

While negotiating the SMB version with the SVM, the client advertises SMBv1 support only.

The SVM resets the connection because SMBv1 is disabled on the SVM.

As a result the client will not be able to connect to the share and the application will fail.

Application unable to connect to CIFS share due to unsupported SMB version - NetApp Knowledge Base