Network Storage Protocols Discussions

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


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



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

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:


Here you can see CIFS support based on kernel version:


Best regards

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

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?