[Bug 1703490] Re: Unable to mount network volume on 17.10 Samba server

[Andreas Hasenack]

Thanks for filing this bug in Ubuntu.

Could you please share your /etc/samba/smb.conf on that 17.10 server?
The output of "testparm -s" would be best.

I tried the same here and could mount the share just fine from xenial.
Maybe you restricted the smb protocol to higher versions? mount.cifs
will use SMB1 by default, whereas windows 10 will use SMB2 or 3 (can't
recall now).

You can check with "smbstatus" on the server which protocol the connected client is using:
root at 15-89:~# smbstatus

Samba version 4.5.8-Ubuntu
PID     Username     Group        Machine                                   Protocol Version  Encryption           Signing              
----------------------------------------------------------------------------------------------------------------------------------------
14179   ubuntu       ubuntu       10.0.5.1 (ipv4:10.0.5.1:57260)            NT1               -                    -                    

Service      pid     Machine       Connected at                     Encryption   Signing     
---------------------------------------------------------------------------------------------
data         14179   10.0.5.1      Tue Jul 11 12:59:32 PM 2017 UTC  -            -           
IPC$         14179   10.0.5.1      Tue Jul 11 12:59:32 PM 2017 UTC  -            -           

No locked files

To specify a different version, mount the cifs fileysystem like this:
root at nsn7:~# mount //10.0.5.55/data /data -o user=ubuntu,vers=2.0
Password for ubuntu@//10.0.5.55/data:  ******

root at nsn7:~# cd /data

root at nsn7:/data# ls -l
total 1024
-rwxr-xr-x 1 root root 38 Jul 11 09:57 welcome.txt

root at nsn7:/data# cat welcome.txt 
Welcome to the data share, developer.

root at nsn7:/data# echo bye > bye.txt
root at nsn7:/data# ls -la
total 2052
drwxr-xr-x  2 root root    0 Jul 11 10:02 .
drwxr-xr-x 34 root root 4096 Jul 11 09:59 ..
-rwxr-xr-x  1 root root    4 Jul 11 10:02 bye.txt
-rwxr-xr-x  1 root root   38 Jul 11 09:57 welcome.txt


And smbstatus on the server in this case (showing only the relevant line, for brevity):
14182   ubuntu       ubuntu       10.0.5.1 (ipv4:10.0.5.1:57720)            SMB2_02           -                    -                    

In any case, I can read and write to the share. This is my smb.conf. All default except for the removal of printer shares, and the addition of the [data] share:
[global]
	server string = %h server (Samba, Ubuntu)
	log file = /var/log/samba/log.%m
	max log size = 1000
	syslog = 0
	panic action = /usr/share/samba/panic-action %d
	usershare allow guests = Yes
	map to guest = Bad User
	obey pam restrictions = Yes
	pam password change = Yes
	passwd chat = *Enter\snew\s*\spassword:* %n\n *Retype\snew\s*\spassword:* %n\n *password\supdated\ssuccessfully* .
	passwd program = /usr/bin/passwd %u
	server role = standalone server
	unix password sync = Yes
	dns proxy = No
	idmap config * : backend = tdb

[data]
	comment = Data share
	path = /data
	read only = no
	browseable = true
	guest ok = no


** Changed in: samba (Ubuntu)
       Status: New => Incomplete

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Title:
  Unable to mount network volume on 17.10 Samba server

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