Getting "mount error(5): Input/output error" when mounting windows share on SLE 12 SP1
This document (7017413) is provided subject to the disclaimer at the end of this document.
Environment
SUSE Linux Enterprise Server 12 SP1
SUSE Linux Enterprise Desktop 12
SUSE Linux Enterprise Server 12
Situation
mount error(5): Input/output error
Refer to the mount.cifs(8) manual page (e.g. man mount.cifs)
In SLE 11 SP3 the same command would work when mounting this same Windows share.
Here is a copy of the SP3 syntax that works
mount -t cifs //server.suse.com:/home /mnt/test -o username=corpdom\\username
In SLE 12 SP1 a similar command would fail
mount -t cifs //server.suse.com/home /mnt/test -o username=corpdom\\username
Here is the error on the command line after running this command
mount error(5): Input/output error
Refer to the mount.cifs(8) manual page (e.g. man mount.cifs)
If you look at the end of "journalctl" you will see these errors.
Status code returned 0xc0000001 NT_STATUS_UNSUCCESSFUL
CIFS VFS: Send error in SessSetup = -5
CIFS VFS: cifs_mount failed w/return code = -5
Resolution
Change "username=corpdom\\username" to "username=username,domain=corpdom"
Examples of a working SLE 12 SP1 mount command
mount -t cifs //IPADDRESS/home /mnt/test -o username=username,domain=corpdom,sec=ntlm
mount --verbose -t cifs //IPADDRESS/home /mnt/test -o username=jmortenson,domain=corpdom,password=XXXXXXXX,sec=ntlm
mount --verbose -t cifs //server.suse.com/home /mnt/test -o username=username,domain=corpdom,password=XXXXXXXX,sec=ntlm
Example for /etc/fstab
//IPADDRESS/home/ /mnt/test cifs rw,sec=ntlm,username=username,domain=corpdom,password=XXXXXXXX,sec=ntlm
//server.suse.com/home/ /mnt/test cifs rw,sec=ntlm,username=username,domain=corpdom,password=XXXXXXXX,sec=ntlm
Cause
A LAN trace revealed that mount.cifs in SLE 12 SP1 was using "ntlmssp" for the security mode.
Add the option "sec=ntlm" to the mount command to change the security mode to match SLE 11 SP3.
This syntax does not work with SLE 12 SP1 change "username=corpdom\\username" to "username=username,domain=corpdom"
Additional Information
smbclient -L IPADDRESS -U username -W corpdom
smbclient //server.suse.com/home -U username -W corpdom
Disclaimer
This Support Knowledgebase provides a valuable tool for SUSE customers and parties interested in our products and solutions to acquire information, ideas and learn from one another. Materials are provided for informational, personal or non-commercial use within your organization and are presented "AS IS" WITHOUT WARRANTY OF ANY KIND.
- Document ID:7017413
- Creation Date: 25-Mar-2016
- Modified Date:03-Mar-2020
-
- SUSE Linux Enterprise Server
For questions or concerns with the SUSE Knowledgebase please contact: tidfeedback@suse.com