[Samba] DFS not working from XP

[Thomas Stewart]

Hi,

I'm am trying to configure our samba server to use dfs. It authenticates
against active directory but it gets the uid mappings from nis via the 
local
nsswitch. I think I have configured dfs ok as smbclient[1] seems to work ok
with my minimal config[2]. However I can't access it from Windows XP[3], 
I get
"network path was not found" when using "net use" from a cmd.exe.

 From the logs[4], it's as if windows does not think it's a dfs share or 
samba
is not serving it up as a dfs share. Even at debug level 10 when windows
accesses the server msdfs.c is never mentioned.

I have sort of hit a dead end and was hoping that someone would have a fix?

Regards
--
Tom

[1]
desktop$ smbclient //server/dfs/share -U tstewart
Password:
Domain=[AD] OS=[Unix] Server=[Samba 3.0.24]
smb: \> ls
  .                                   D        0  Thu Mar 29 10:53:27 2007
  ..                                  D        0  Thu Mar 29 10:50:35 2007
  file                                         0  Thu Mar 29 10:53:27 2007

                34341 blocks of size 2097152. 13584 blocks available
smb: \>
desktop$

[2]
$ cat smb.conf
[global]
        wins server = wins0
        debug pid = yes
        debug level = 10
        debug hires timestamp = yes
        security = ads
        password server = ad.nibsc.ac.uk
        realm = AD.NIBSC.AC.UK
        workgroup = AD
        client use spnego = yes
        winbind trusted domains only = yes
        winbind use default domain = yes
        idmap uid = 10000-10100
        idmap gid = 10000-10100
        host msdfs = yes

[dfs]
        path = /n22/tom/dfs
        msdfs root = yes

[share]
        path = /n22/tom/share
        writeable = yes
        valid users = ad\tstewart

server$ gls -Rla /n22/tom
/n22/tom:
total 19
drwxr-xr-x    4 tstewart other       15872 Mar 29 10:50 .
drwxr-xr-x    7 root     root          512 Jan 12  2006 ..
drwxr-xr-x    2 tstewart other         512 Mar 29 10:53 dfs
drwxr-xr-x    2 tstewart other         512 Mar 29 10:53 share

/n22/tom/dfs:
total 17
drwxr-xr-x    2 tstewart other         512 Mar 29 10:53 .
drwxr-xr-x    4 tstewart other       15872 Mar 29 10:50 ..
lrwxrwxrwx    1 root     other          20 Mar 29 10:53 share ->
msdfs:server\share

/n22/tom/share:
total 17
drwxr-xr-x    2 tstewart other         512 Mar 29 10:53 .
drwxr-xr-x    4 tstewart other       15872 Mar 29 10:50 ..
-rw-r--r--    1 root     other           0 Mar 29 10:53 file
server$

[3]
C:\>net use \\server\dfs
The command completed successfully.

C:\>net use \\server\dfs
Local name
Remote name       \\server\dfs
Resource type     Disk
Status            OK
# Opens           0
# Connections     1
The command completed successfully.

C:\>net use \\server\share
The command completed successfully.

C:\>net use \\server\share
Local name
Remote name       \\server\share
Resource type     Disk
Status            OK
# Opens           0
# Connections     1
The command completed successfully.

C:\>net use \\server\dfs\share
System error 53 has occurred.

The network path was not found.

C:\>

[4]
smbclent:
[2007/03/31 14:42:11.723604, 4, pid=24840] 
smbd/reply.c:reply_tcon_and_X(668)
  Client requested device type [IPC] for share [IPC$]
[2007/03/31 14:42:11.723922, 5, pid=24840] 
smbd/service.c:make_connection(1125)
  making a connection to 'normal' service ipc$
[2007/03/31 14:42:11.724292, 10, pid=24840]
smbd/share_access.c:user_ok_token(229)
  user_ok_token: share IPC$ is ok for unix user tstewart
<SNIP>
[2007/03/31 14:42:12.369439, 5, pid=24846] smbd/uid.c:change_to_user(260)
  change_to_user uid=(0,1544) gid=(0,100)
[2007/03/31 14:42:12.369711, 4, pid=24846] smbd/vfs.c:vfs_ChDir(741)
  vfs_ChDir to /tmp
[2007/03/31 14:42:12.370058, 10, pid=24846]
smbd/trans2.c:call_trans2getdfsreferral(4938)
  call_trans2getdfsreferral
[2007/03/31 14:42:12.370343, 10, pid=24846] smbd/msdfs.c:parse_dfs_path(44)
  temp in parse_dfs_path: .server\share. after trimming \'s
[2007/03/31 14:42:12.370584, 10, pid=24846] smbd/msdfs.c:parse_dfs_path(54)
  parse_dfs_path: hostname: server
[2007/03/31 14:42:12.370860, 10, pid=24846] 
smbd/msdfs.c:setup_dfs_referral(834)
  max_referral_level :3
[2007/03/31 14:42:12.371090, 10, pid=24846]
smbd/msdfs.c:setup_ver3_dfs_referral(711)
  setting up version3 referral
[2007/03/31 14:42:12.371313, 10, pid=24846]
smbd/msdfs.c:setup_ver3_dfs_referral(715)

winxp:
[2007/03/31 15:10:10.616083, 4, pid=25711] 
smbd/reply.c:reply_tcon_and_X(668)
  Client requested device type [?????] for share [DFS]
[2007/03/31 15:10:10.616420, 5, pid=25711] 
smbd/service.c:make_connection(1125)
  making a connection to 'normal' service dfs
[2007/03/31 15:10:10.616768, 10, pid=25711]
smbd/share_access.c:user_ok_token(229)
  user_ok_token: share dfs is ok for unix user tstewart
<SNIP>
[2007/03/31 15:10:24.048596, 5, pid=25711] smbd/uid.c:change_to_user(260)
  change_to_user uid=(0,1544) gid=(0,100)
[2007/03/31 15:10:24.048917, 4, pid=25711] smbd/vfs.c:vfs_ChDir(741)
  vfs_ChDir to /n22/tom/dfs
[2007/03/31 15:10:24.049317, 5, pid=25711] smbd/filename.c:unix_convert(108)
  unix_convert called on file "share"
[2007/03/31 15:10:24.049621, 10, pid=25711]
smbd/statcache.c:stat_cache_lookup(215)
  stat_cache_lookup: lookup failed for name [SHARE]
[2007/03/31 15:10:24.049891, 5, pid=25711] smbd/filename.c:unix_convert(185)
  unix_convert begin: name = share, dirpath = , start = share