[Samba] cifs and Netapp DFS-shares problems

[Marcus]

Hi,

Am Donnerstag, den 09.12.2010, 01:37 +0100 schrieb Marcus:
> 
> are there any known issues with cifs and DFS-shares on Netapp file
> servers? We have a Netapp file sever with DFS on the user's home shares.
> The home shares can successfully mounted with
> 
>   mount -t cifs //sever/home/username /mnt/ -o user=username,domain=AD
> 
> but the connection hangs in the moment a directory listing is started.
> The strange thing is that only shares with activated DFS show this
> problem. I'm not maintaining the Netapp file server therefore a can't
> post more information about that system. On client side I'm using Ubuntu
> LTS 10.04.1.

This error only comes up, if DFS is activated on a share on the NetApp
Server. Here is a kernel log:

Dec 10 11:10:37 lebowski kernel: [ 3586.471662] Bad SMB: : dump of 48
bytes of data at 0xe44e5c00
Dec 10 11:10:37 lebowski kernel: [ 3586.471675]  0000009a 424d53ff
00000032 80018800 . . . . ÿ S M B 2 . . . . . . .
Dec 10 11:10:37 lebowski kernel: [ 3586.471688]  00000000 00000000
00000000 26420040 . . . . . . . . . . . . @ . B &
Dec 10 11:10:37 lebowski kernel: [ 3586.471701]  001a0800 7000020a
02000000 00003800 . . . . . . . p . . . . . 8 . .
Dec 10 11:11:03 lebowski kernel: [ 3612.832108]  CIFS VFS: server not
responding
Dec 10 11:11:03 lebowski kernel: [ 3612.832125]  CIFS VFS: No response
for cmd 50 mid 26
Dec 10 11:11:05 lebowski kernel: [ 3614.656937]  CIFS VFS: RFC1001 size
154 bigger than SMB for Mid=30
Dec 10 11:11:05 lebowski kernel: [ 3614.656953] Bad SMB: : dump of 48
bytes of data at 0xe44e5c00
Dec 10 11:11:05 lebowski kernel: [ 3614.656967]  0000009a 424d53ff
00000032 80018800 . . . . ÿ S M B 2 . . . . . . .
Dec 10 11:11:05 lebowski kernel: [ 3614.656979]  00000000 00000000
00000000 26420040 . . . . . . . . . . . . @ . B &
Dec 10 11:11:05 lebowski kernel: [ 3614.656994]  001e0800 7000020a
02000000 00003800 . . . . . . . p . . . . . 8 . .
Dec 10 11:11:33 lebowski kernel: [ 3642.832284]  CIFS VFS: server not
responding
Dec 10 11:11:33 lebowski kernel: [ 3642.832299]  CIFS VFS: No response
for cmd 50 mid 30
Dec 10 11:11:40 lebowski kernel: [ 3649.895000]  CIFS VFS: RFC1001 size
154 bigger than SMB for Mid=34
Dec 10 11:11:40 lebowski kernel: [ 3649.895017] Bad SMB: : dump of 48
bytes of data at 0xe44e5c00
Dec 10 11:11:40 lebowski kernel: [ 3649.895030]  0000009a 424d53ff
00000032 80018800 . . . . ÿ S M B 2 . . . . . . .
Dec 10 11:11:40 lebowski kernel: [ 3649.895043]  00000000 00000000
00000000 26420040 . . . . . . . . . . . . @ . B &
Dec 10 11:11:40 lebowski kernel: [ 3649.895056]  00220800 7000020a
02000000 00003800 . . " . . . . p . . . . . 8 . .
--------------------------

umounting is impossible and gives the following error:

--------------------------
unmount error 16 = Device or resource busy
Refer to the umount.cifs(8) manual page (man 8 umount.cifs)
unmount error 16 = Device or resource busy
Refer to the umount.cifs(8) manual page (man 8 umount.cifs)
--------------------------

Any ideas? Seems to be an error of the NetApp Fileserver acting not RFC
conform.

Is this the right list to discuss or should I post on linux-cifs-client
list?

Ciao,
Marcus