Why is mount.cifs not working in fstab any more after upgrading from 16.04 to 18.04?
My fstab for connecting to a local NAS was always
//192.168.111.112/RAID /home/moi/share/OMV cifs noauto,users,username=USERNAME,passwd=PASSWORD
After upgrading my system from Lubuntu 16.04 to 18.04 this did not work any more, giving the error-message:
Failed to query password: Permission denied
Password for USER@//192.168.111.112/RAID: mount error(22): Invalid argument
Refer to the mount.cifs(8) manual page (e.g. man mount.cifs)
Solution 1:
What worked for me was adding vers=1.0 to the options in fstab in combination with changing the option for password from passwd to password:
//192.168.111.112/RAID /home/moi/share/OMV cifs vers=1.0,noauto,users,username=USERNAME,password=PASSWORD
This helped to find an error-log:
tail -f /var/log/kern.log
I would appreciate any further input.
EDIT: Sept 2019
Today I realized that users is no longer a valid argument of the mount cifs command. Also, vers=1.0 should be the default, according to man mount.cifs.
Solution 2:
I have been struggling with this for a couple days, I could get to samba shares on an ubuntu 16.04 desktop system with my lubuntu 18.04 new installation using smb4k, but not in fstab. I used some of the parameters listed by 'mount' after mounting a share using smb4k. What I found was the credentials=/etc/samba/auth.myserver.me did not work like it did with ubuntu 16.04. The following syntax would allow a mount:
//192.168.10.66/servershare /mnt/localdir cifs rw,vers=1.0,sec=ntlmssp,username=USER,password=PASSWORD,domain=YOURDOMAIN,uid=LOCALUSER,gid=LOCALUSER,posixpaths,mapposix,acl 0 0
What I do not know is which of the above options are required. Use your own values for USER, PASSWORD, and YOURDOMAIN.
Whenever I used the credentials=/etc/samba/auth.myserver.me, I would always get a 'Permission denied' message. Apparently ubuntu 18.04 is not properly accessing the credentials file listed in fstab or the syntax has changed.
You may have to experiment with the uid and gid. I normally only login as a particular user, which I am calling LOCALUSER, the default group for that login would also be LOCALUSER.