samba - Jan 1998 - Domain logon problem

Problem: 

Domain logons temporary fail for a few minutes on all smb clients
on the network.

Reason:

When using WINS support in samba-1.9.17p5 and the client request
a resolv of a host-adress the sys_gethostbyname() system call in nmbd will
block. When resolving a non-existant hostname or communicating
with a slow nameserver the entire nmbd functionality will be unavailable 
causing this problem.

Example:


When a user selects a url in a browser like
file://hostname/file
the file will be accessed using smb and the hostname
will be resolved through WINS.

Known workarounds:

1. Disable WINS  :-)
2. Use another host (for example a Windows NT server) as WINS

Possible bugs:

It is not possible to disable DNS resolutions of Internet hostnames.
The "proxy dns = no" under section [global] in smb.conf does not avoid
this problem.


With friendly regards,

Mikael Brandstr?m		Johan Carlstedt
mikael@Katedral.SE		johan@Katedral.SE

The Cathedral School of Uppsala, Sweden

On Fri, 9 Jan 1998, Johan Carlstedt wrote:
> Problem: 
> 
> Domain logons temporary fail for a few minutes on all smb clients
> on the network.
> 
> Reason:
> 
> When using WINS support in samba-1.9.17p5 and the client request
> a resolv of a host-adress the sys_gethostbyname() system call in nmbd will
> block. When resolving a non-existant hostname or communicating
> with a slow nameserver the entire nmbd functionality will be unavailable 
> causing this problem.
this is a known problem and has been fixed in 1.9.18 with the introduction
of an asynchronous dns lookup wrapper (asyncdns.c module).

lukes

All,

I have recently set up Samba, and everything seems to work OK, except it is 
not executing the Domain Logon script.

Server Environment: Red Hat 7.0 with Samba 2.0.7. Linux box is PDC server
Clients: Windows 95/98(for now)

I will include the following log files(they are short because I have 
retsrtarted the samba server, and I am performing a test with one user ID).

It seems that whenever user frankk tries running the netlogon login script,
the service is started and then closed. When I mount those shares from 
Windows Explorer as 'frankk', the shares are remounted every time I
restart
my machine.

Has anyone seen any problems with Windows Logon scripts? The script I am
trying to execute is pretty straight forward(synchronizing system time and 
mounting two shares). I also developed the script in DOS, and FTP'd over to
my Samba Server.

I would really appreciate any help that can be provided.

Thanks in advance

Frank     
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