On Thu, Mar 26, 2015 at 12:41 AM, Ian Collins <[email protected]> wrote:

> 2. Are you using a simple shares, Win NT4 domain, or active directory?  If
>> a domain, is the Samba a domain controller?
>>
>
> LDAP, Win NT4 domain.


Between this,

To cut a long story short, a small subset of users (there are about 1000
> users, less than a dozen have issues) on a small subset of windows 7
> machines can't access files with nontrivial


and this (1000 user); you are not a typical Samba deployment.

My first gut reaction is that it's a WINS problem.   Since you have other
DCs on your subnet, the suspect Win7 machines might be having a hard time
when they see the other DC.  Remember, Win7 was designed for active
directory, so it will have a more difficult time with NT4 DOM deployments
than Win XP.  Try hard setting "Enable NetBIOS over TCP/IP" in the machines
WINS settings (you can also set this as a DHCP setting if you like).  Also,
manually key in the Samba server IP address as a WINS server (just for the
test.).

I would try this first and then move into looking at log files for Samba.
Run the log level up to 7 and then examine the smbd log file during the
authentication attempt.  The log files are going to grow in size very
quickly, so you'll want to do this when traffic is lowest.


> We used to get around the problem by using locally built Samba 3.0.33, but
> that's so full of other problems, we want to move on.


Samba 3.0 was roughly 13 years ago.  That's not a real good comparison and
there's likely no relation to the problem then vs now.

Greg



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