[Samba] Windows XP and Samba 3.0.22 -- don't mix?

Ryan Steele steele at agora-net.com
Tue Jun 13 15:37:05 GMT 2006


I desperately need a resolution to this issue.  I've asked once (about a 
day or two ago), but I haven't heard anything back.  The only reason I 
press the issue is I may because without a quick resolution, I may be 
forced to switch over to AD (cry!).  I submitted a request via Bugzilla 
but I saw a slightly similar problem with 3.0.20a that still hasn't been 
resolved, so I thought this might be a quicker route?  Here's a synopsis:

I think I've tracked down a problem (sort of).  In a little test 
environment, I have a server and two machines.  The server is the file 
server for the two machines and is running Samba 3.0.22.  Client machine 
A is a Linux box, client machine B is a Windows 2000 box.  I open up a 
Samba share from the Linux box like so:

smbclient -U user \\\\server\\user

This gives me an smb prompt (smb \>).  When I execute a 'ps auxwww | 
grep mbd', I see that one process reflected in the output.  
Additionally, an smbstatus confirms this.  Now, I type "exit" at that 
prompt, and the share is closed.  The ps command and smbstatus confirm 
this.  Wonderful, works just like it should...tears down the process 
when it's done using it.  Now for the Windows box... (take a deep 
breath, but don't hold it, heh)...

I navigate through Windows Explorer to My Network Places and so on until 
I get to the server.  I open up a folder on the server.  I execute the 
'ps auxwww | grep mbd' and sure enough, there's the share.  The 
smbstatus command confirms this.  Now, I close out that Windows Explorer 
window I have open to the server.  However, a 'ps auxwww | grep mbd' 
shows that there is still a connection open to this folder.... an 
smbstatus confirms....  After a few minutes, the user for that pid 
changes to root, and the process just sits in there forever, sucking up 
0.9% of memory.  This happens with EVERY share Windows opens, and when 
it gets in this state, I can't open any new shares.  I've tried using 
the "deadtime" option to kill these...no dice, they still hang around.  
In fact, the only thing that gets rid of them is a 'killall -9 smbd'.  
So, basically I'm stuck with restarting Samba every time too many 
files/folders get opened on the server...in a production environment!  
Is this a bug in 3.0.22?  Is there some option that is needed to kill 
Windows connections to Samba servers?  This is most troublesome!

This being said, I'm rather new to Linux administration, so I'm not 
really sure how to strace this if this is in fact not a bug ( though 
advice is humbly accepted  ^_^ ).  However, after seeing this on two 
completely separate systems with XP clients, I'm relatively sure that I 
have my smb.conf set up properly, and I should really be worried about 
this being a bug.  Here's a copy of my smb.conf, just in case (FYI, this 
thing has a lot of stuff commented out so it isn't very pretty, and I'm 
aware of the fact that "printer admin" is deprecated).  Also, I have a 
cleaner copy from my test environment if that would be more desirable.  
Anyways, here it is:

# Global parameters
       netbios name = PDC-COMPANY
       workgroup = COMPANY
       printer admin = @"Print Operators"
       admin users= @"Domain Admins"
       deadtime = 20
       enable privileges = yes
       server string = Samba Server %v
       security = user
       encrypt passwords = Yes
       #min passwd length = 3
       obey pam restrictions = No
       ldap passwd sync = Yes
       log level = 3
       syslog = 0
       log file = /var/log/samba/log.%m
       max log size = 100000
       time server = Yes
       socket options = TCP_NODELAY SO_RCVBUF=8192 SO_SNDBUF=8192
       mangling method = hash2
       Dos charset = 850
       Unix charset = ISO8859-1

       logon script = logon.bat
       logon drive = H:
       logon home = \\%N\%u
       logon path =

       domain logons = Yes
       os level = 67
       preferred master = Yes
       domain master = Yes
       wins support = Yes
       passdb backend = ldapsam:"ldap:// ldap://"
       # passdb backend = ldapsam:"ldap:// 
       # ldap filter = (&(objectclass=sambaSamAccount)(uid=%u))
       ldap admin dn = cn=admin,dc=company,dc=com
       ldap suffix = dc=company,dc=com
       ldap group suffix = ou=Groups
       ldap user suffix = ou=People
       ldap machine suffix = ou=People
       ldap idmap suffix = ou=People
       #ldap ssl = start tls
       add user script = /usr/sbin/smbldap-useradd -m "%u"
       ldap delete dn = Yes
       #delete user script = /usr/sbin/smbldap-userdel "%u"
       add machine script = /usr/sbin/smbldap-useradd -w "%u"
       add group script = /usr/sbin/smbldap-groupadd -p "%g"
       #delete group script = /usr/sbin/smbldap-groupdel "%g"
       add user to group script = /usr/sbin/smbldap-groupmod -m "%u" "%g"
       delete user from group script = /usr/sbin/smbldap-groupmod -x 
"%u" "%g"
       set primary group script = /usr/sbin/smbldap-usermod -g "%g" "%u"

# printers configuration
       load printers = Yes
       printing = cups
       printcap name = cups
       ; to maintain capital letters in shortcuts in any of the profile 
       preserve case = yes
       short preserve case = yes
       case sensitive = no

       comment = Home of %U, %u
       read only = No
       create mask = 0644
       directory mask = 0775
       browseable = No
       oplocks = No
       level 2 oplocks = No

       path = /home/netlogon/
       read only = yes
       browseable = Yes
       write list = user1
       valid users = @"Domain Users"

       #comment = Network Printers
       #printer admin = @"Print Operators"
       #guest ok = yes
       #printable = yes
       #path = /home/spool/
       #browseable = No
       #read only  = Yes
       #printable = Yes
       #print command = /usr/bin/lpr -P%p -r %s
       #lpq command = /usr/bin/lpq -P%p
       #lprm command = /usr/bin/lprm -P%p %j
       comment = All Printers
       path = /var/spool/cups
       browseable = yes
       public = yes
       guest ok = yes
       writable = no
       printable = yes
       printer admin = root, @"Print Operators"

       path = /home/printers
       guest ok = Yes
       browseable = Yes
       read only = Yes
       valid users = @"Domain Users"
       write list = @"Print Operators"
       #create mask = 0664
       #directory mask = 0775

       comment = Public Repository
       path = /home/public
       guest ok = Yes
       read only = No
       directory mask = 0775
       create mask = 0664
       oplocks = No
       level 2 oplocks = No

       comment = Helpful Downloads
       path = /home/downloads
       guest ok = Yes
       read only = No
       directory mask = 0775
       create mask = 0664
       write list = user1
       valid users = @"Domain Users"

Any help would be greatly appreciated....thanks!

Best Regards,
Ryan Steele

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