[Samba] How to mount a share without using -o vers=1.0 ?

[Rowland penny]

On 13/05/2019 17:05, Steve Litt via samba wrote:
> Hi all,
>
> Behavior described in this email is identical whether I try to mount at
> 192.168.100.2, my desktop and location of my Samba server, or
> 192.168.100.239, my laptop that is remote from my desktop with Samba
> server...
>
> I want to mount a share defined on my Linux desktop, on my Linux
> laptop, as a better alternative than sshfs or NFS. I want this mount to
> happen as version 2.x or 3.x, not as version 1.x. I was successful
> using version 1.x with the following mount command:
>
> mount -t cifs -o
> username=slitt,vers=1.0 //192.168.100.2/mdesk /mnt/mdesk
>
> However, when I remove the vers=1.0, it fails with the following
> message:
>
> ====================================================================
> mount error: Server abruptly closed the connection.
> This can happen if the server does not support the SMB version you are
> trying to use. The default SMB version recently changed from SMB1 to
> SMB2.1 and above. Try mounting with vers=1.0. mount error(112): Host is
> down Refer to the mount.cifs(8) manual page (e.g. man mount.cifs) and
> kernel log messages (dmesg)
> ====================================================================
>
> So I'm still left with the question, how do I do this without vers=1.0.
>
> dmesg pretty much just repeats the error message, as follows:
>
> ====================================================================
> FS-Cache: Netfs 'cifs' registered for caching
> [859714.535143] Key type cifs.spnego registered
> [859714.535152] Key type cifs.idmap registered
> [909312.597299] No dialect specified on mount. Default has changed to a
> more secure dialect, SMB2.1 or later (e.g. SMB3), from CIFS (SMB1). To
> use the less secure SMB1 dialect to access old servers which do not
> support SMB3 (or SMB2.1) specify vers=1.0 on mount.
> ====================================================================
>
> The mount.cifs man page seemed mute on the subject except for -o
> sec=whatever, and all combinations I tried of sec=whatever and smb.conf
> security=whatever didn't change the symptom.
>
> I'm running Void Linux (x86_64) with smbd version 3.6.25 and nmbd
> version 3.6.25. My mount.cifs is version 6.9. My iptables firewall
> allows both tcp and udp traffic in and out at ports 137, 138, 139, 53,
> and 445.
>
> The global part of my smb.conf follows:
>
> ====================================================================
> global]
>     workgroup = MYGROUP
>     server string = mdesk_share
>     security = user
>     hosts allow = 192.168.100.239 192.168.100.2
>     load printers = yes
>     log file = /var/log/samba/%m.log
>     max log size = 50
>     passdb backend = tdbsam
>     dns proxy = no
> ====================================================================
>
> The smb.conf section for the share I'm trying to mount follows:
>
> ====================================================================
> [mdesk]
>    comment = Mydesk Mount point
>    path = /scratch/mdesk
>    valid users = slitt
>    public = yes
>    writeable = yes
>    printable = no
> ====================================================================
>
> I couldn't find an answer on Samba.Org, and web searches produced
> mostly guesses and speculation, many of which I followed up on but led
> nowhere.
>
> Any advice on how to perform this mount without -o vers=1.0 would be
> greatly appreciated.
>
> Thanks,
>
> SteveT
>
Steve, Your version of Samba is too old, it only understands SMBv1, any 
way you can upgrade Samba ?

Rowland