[Samba] Samba3 shares cannot be mounted on linux box uisng cifs command , error "CIFS VFS: cifs_mount failed w/return code = -13"

Tue Jul 14 16:45:29 UTC 2015

On 14/07/15 16:49, Mario Pio Russo wrote:
>
> Good Day All
>
> I have a problem for our main fileserver base don samba 3.5.6
>
> Let's give a bit of pregress first. We had a samba 3.5.6 installation which
> was acting as a PDC for our internal domian called CCDC. On a sapearate
> machine, we had another installation of samba 3.5.6 to act just as file
> share server.
>
> All was working ok, till I upgraded the PDC form samba 3.5.6 to samba
> 4.2.2 , using the classicupgrade.

Do you mean you upgraded an NT4 PDC via 'samba-tool domain 
classicupgrade' to an AD DC ?

>
> Now I am able to access the shares from the windows boxes added to the CCDC
> domain, but when I try to mount a cifs share form a linux box, then I get
> the following error:
>
>
> mount.cifs -o
> username=mariopio,domain=CCDC  //seadog.mul.ie.ibm.com/scrap/4mario /media/
> Password:
> mount error(13): Permission denied
> Refer to the mount.cifs(8) manual page (e.g. man mount.cifs)
>
> form dmesg I can see the following error:
>
> CIFS VFS: cifs_mount failed w/return code = -13
>

Your user is not known.

> the smb.conf of the file server is the following:
>
>
> root at seadog:/etc/samba# cat smb.conf
> [global]
>
>          write cache size = 131072
>
>        vfs objects = full_audit
>        full_audit:prefix = %u,%I,%m,%S
>        # removed this, so we only log failures.
>        # however will keep it here commented it out for future reference
>
>        #full_audit:success = mkdir rename unlink rmdir open chown chmod
> connect readlink
>        full_audit:failure = mkdir rename unlink rmdir open chown chmod
> connect readlink
>        full_audit:facility = local7
>        full_audit:priority = NOTICE
>
>
>        server string = CSI Samba Server
>        workgroup = CCDC
>        netbios name = SEADOG
>        realm = CCDC.LAN
>        security = ads
>        #security = domain
>        wins server = 9.161.96.220
>        server signing = mandatory
>        password server = 9.161.96.220

password server shouldn't be set, let samba find it itself.

>
>       map untrusted to domain = yes
>
>        wins support = no
>        wins proxy = no
>        dns proxy = no
>        name resolve order = wins host bcast
>
>        winbind use default domain = yes
>
>        winbind uid = 10000-20000
>        winbind gid = 10000-20000
>        winbind cache time = 15
>        winbind enum users = yes
>        winbind enum groups = yes
>
>        # This is needed, a fake home folder so that users are able to ftp
>        # this folder is empty but exists, do a getent passwd to see what I
> mean
>        template homedir = /home/winbind
>
>        local master = no
>        domain master = no
>
>        # To o with ACL mapping to windows
>        #
>        dos filemode = Yes
>        acl group control = Yes
>        acl map full control = Yes
>         map acl inherit = Yes
>
>        guest account = nobody
>        invalid users = root daemon bin sys sync games man lp mail news uucp
> proxy www-data backup list irc gnats Debian-exim sshd ntpd
>
>        log file = /var/log/samba/log.%m
>        log level = 3
>
>        max log size = 2000
>        syslog = 0
>
>        # using these options copied from clearcase.
>        # back in the day we did research these to death
>        #
> #      socket options = SO_RCVBUF=8192 SO_SNDBUF=8192 SO_KEEPALIVE
> IPTOS_LOWDELAY TCP_NODELAY
>        socket options = SO_RCVBUF=262144 SO_SNDBUF=262144 SO_KEEPALIVE
> IPTOS_LOWDELAY TCP_NODELAY
>
>        # This disables print options
>        # we are not a print server
>        #
>        load printers = No
>        disable spoolss = Yes
>
>        smb ports = 139
>
>        # every mount from the SAN has a lost+found folder
>        # to avoid user confusion, have set this to hidden
>        #
>        hide files = /lost+found/
>
>        aio read size = 1
>        aio write size = 1
>        follow symlinks          = no
>
>
>
> [scrap]
>        comment              = ICS - CSI general scrap Area
>        path                 = /export/ICS/CSI/scrap
>        valid users          = @"Domain Users"
>        force create mode    = 750
>        force directory mode = 740
>        writeable            = Yes
>        browseable           = Yes
>
>
>
>
> note that on this fileserver nothing was touched during the classiupgrade,
> a part the following parameters of the smb.conf

Well, it probably should have been :-)

>
>        realm = CCDC.LAN
>        security = ads
>        wins server = 9.161.96.220
>
>        password server = 9.161.96.220
>
>
>
> I have tried already different Linux machine with different distribution
> and I always get the same error, I have also tried to add the parameter
> "sec=ntlm or ntlmi " but hasn't changed much.
>
> Note that for some historical reason, this file server has NOT a kerbero
> workstation installation and was joined to the CCDC domain using net rpc
> join instead of net ads join, could this be a problem?

It would seem the domain has been upgraded to AD and your fileserver may 
require joining to the new domain, but it is more likely to be something 
to do with the winbindd changes that came in with 4.2.0, see here:

https://www.samba.org/samba/history/samba-4.2.0.html

Rowland

> any help is much appreciated!!!!
>
>
> thanks
> ___________________________________________________________________________________________
>
> Mario Pio Russo, System Admin SWG IT Services Dublin, Phone & FAX: +353 1
> 815 2236, eMail: mariopiorusso at ie.ibm.com
> IBM Ireland Product Distribution Limited registered in Ireland with number
> 92815. Registered Office: IBM House, Shelbourne Road, Ballsbridge, Dublin 4
>
> (Embedded image moved to file: pic44465.gif)