[Samba] Samba4 bug - "mount error(5): Input/output error"

[Rowland Penny]

On 11/05/14 10:00, Leander Schäfer wrote:
> Hi Rowland,
>
> do you maybe have any idea what could potentially cause this bug? 
> smbclient thrwos me back a
>
> mount error(5): Input/output error
>
> when I try to mount the remote smbFS. It doesn't happen with my MacOSx 
> and Windows 7 as client but it happens with Linux OSs and with a 
> Konica Minolta copy machine with a scanner to samba function. The 
> first try to mount fails with the above error. The second try will be 
> a success right away without any errors. I don't understand what 
> causes this behaviour?! I thought you may have an idea?
> Thank you
>
>
>
> Samba Server is Version 4.1.7 and it's running on a FreeBSD 10.0 
> RELEASE (fresh installation)
> Samba client (eg. on Linux) is Version 3.5.4-0.83.el5_7.2
> mount cmd on (eg. Linux is):
>
> mount -t cifs //10.0.0.200/MYSHARE -o 
> username="${SMB_USR}",password="${SMB_PWD}",sec=ntlmv2 /mnt/MyShare
>
> Below is my config, if useful:
>
> cat << EOF > /usr/local/etc/smb4.conf
> # ================================== #
> #        Samba4 - FileServer         #
> # ================================== #
>
>
> # ============= Global ============= #
>
> [global]
>
>   # Basic server settings
>   workgroup          = $( echo ${DOMAINNAME^^} | awk -F'.' '{print $1}' )
>   realm              = ${DOMAINNAME^^}
>   netbios name       = ${SERVERNAME^^}
>
>   # Password backend
>   passdb backend     = tdbsam
>
>   # Logging
>   log level    = 4
>  #log level    = auth:3
>   max log size = 0
>
>   # NTLMv2
>   ntlm auth          = No
>   lanman auth        = No
>   client ntlmv2 auth = Yes
>
>   # Printing
>   load printers = No
>   printing      = BSD
>   printcap name = /dev/null
>
>   # Default masks
>   unix extensions      = No
>   create mask          = 0777
>   force create mode    = 0777
>   directory mask       = 0777
>   force directory mode = 0777
>
>   # Miscellaneous
>   veto oplock files  = /*.doc/*.xls/*.ppt/*.mdb/*.docx/*.xlsx/*.ppt
>   veto files         = 
> /.snap/.windows/.zfs/Thumbs.db/.DS_Store/._.DS_Store/.apdisk/.TemporaryItems/
>   wide links         = No
>
>
> # ============= Shares ============= #
>
> [...]
>
> [MyShare]
>   comment     = MyShare - Storage
>   path        = /mnt/MyShare
>   guest ok    = No
>   read only   = No
>   valid users =  myuser, leander, patrick
>   force user  =  myuser
>   vfs objects = recycle, zfsacl, streams_xattr
>   nfs4:mode   = special
>   nfs4:acedup = merge
>   nfs4:chown  = yes
>   zfsacl:acesort = dontcare
>   recycle:repository     = /mnt/vMachines/.Trashes
>   recycle:directory_mode = 0777
>   recycle:keeptree       = Yes
>   recycle:versions       = Yes
>   recycle:touch          = Yes
>   recycle:touch_mtime    = No
>   recycle:exclude        = ?~$*,~$*,._*,.smbdelete*
>
> [...]
> EOF
> chmod 0644       /usr/local/etc/smb4.conf
> chown root:wheel /usr/local/etc/smb4.conf
>
>
> Kind regards,
> Leander
Hi, have you tried using 'sec=krb5' instead ? I am not really an expert 
here, Steve knows far more about this than me, so perhaps he will chime 
in with some advise.

Rowland