[Samba] Trouble with mount.cifs while smbclient works (Ubuntu 12.04)

[Shirish Pargaonkar]

On Thu, May 17, 2012 at 8:02 PM, Günter Kukkukk <linux at kukkukk.com> wrote:
> Am Donnerstag, 17. Mai 2012, 20:29:25 schrieb Scott_Purcell at dell.com:
>> Modinfo reports:
>>
>> $ modinfo cifs
>> filename:       /lib/modules/3.2.0-24-generic/kernel/fs/cifs/cifs.ko
>> version:        1.76
>> description:    VFS to access servers complying with the SNIA CIFS
>> Specification e.g. Samba and Windows license:        GPL
>> author:         Steve French <sfrench at us.ibm.com>
>> srcversion:     B869252FD0961045466332F
>> depends:
>> intree:         Y
>> vermagic:       3.2.0-24-generic SMP mod_unload modversions
>> parm:           CIFSMaxBufSize:Network buffer size (not including header).
>> Default: 16384 Range: 8192 to 130048 (int) parm:
>> cifs_min_rcv:Network buffers in pool. Default: 4 Range: 1 to 64 (int)
>> parm:           cifs_min_small:Small network buffers in pool. Default: 30
>> Range: 2 to 256 (int) parm:           cifs_max_pending:Simultaneous
>> requests to server. Default: 32767 Range: 2 to 32767. (int) parm:
>>  echo_retries:Number of echo attempts before giving up and reconnecting
>> server. Default: 5. 0 means never reconnect. (ushort) parm:
>> enable_oplocks:Enable or disable oplocks (bool). Default:y/Y/1 (bool)
>>
>>
>>
>> Scott Purcell
>> Content Development: Linux, Virtualization, and Cloud Solutions
>> Dell | GSD Learning & Development
>> ________________________________________
>> From: Shirish Pargaonkar [shirishpargaonkar at gmail.com]
>> Sent: Thursday, May 17, 2012 12:15 PM
>> To: Purcell, Scott
>> Cc: samba at lists.samba.org
>> Subject: Re: [Samba] Trouble with mount.cifs while smbclient works (Ubuntu
>> 12.04)
>>
>> On Thu, May 17, 2012 at 11:38 AM,  <Scott_Purcell at dell.com> wrote:
>> > Passing "sec=ntlmssp" did not help.  Nor did moving the options prior to
>> > the device and mount-point specifications.
>> >
>> > I'm not comfortable sending a full tcpdump to the list whose membership I
>> > do not know (but I can send it directly to formal members of the Samba
>> > team -- I see Gunter's name on the website. Shirish, are you on the team
>> > as well?) since it would reveal things about my network environment that
>> > our data security folks would not want revealed.  But I have performed
>> > such a capture -- are there specific things I should be looking for?
>>
>> I think your session setup is failing.  Basically what does negotiate
>> protocol response
>> returns (capabilities etc.).
>> Also, what is the version of cifs module? (modinfo cifs   command
>> would tell that)
>>
>> > --
> Hi Scott,
>
> just had a first look at your network trace:
>  - negprot     ok
>  - sess_setup  ok
>  - treeconnect ok  (for shared tree and IPC$)
>
> Then cifs is doing a QUERY_PATH_INFO (query file all info (263))
> request on the shared tree (path = ""), which is failing with
> STATUS_ACCESS_DENIED.
>
> In a former post you used:
>
> $ sudo smbclient  //pc************.com/D******NAS2 -A /etc/.smb_creds.txt
> Domain=[A*****S] OS=[EMC-SNAS:T5.6.50.205] Server=[NT1]
> smb: \> ls training/
> NT_STATUS_ACCESS_DENIED listing \training\
> smb: \> cd training
> smb: \training\> ls
>  .                                  DA        0  Tue Jan 10 13:17:11 2012
>  ..                                 DA        0  Thu Sep  1 11:54:48 2011
>  Enterprise                         DA        0  Fri Oct 21 07:03:08 2011
>  enterprise_services_offering       DA        0  Mon Jun 13 16:31:21 2011
>  Flash_Beta                         DA        0  Wed Apr 14 13:46:40 2010
>  Functions                          DA        0  Sat Feb 27 09:47:17 2010
>  GCSS                               DA        0  Wed Apr 14 13:46:49 2010
>
> After connect you do a "ls training/" and get access denied, but then you
> cd into that subdir and "ls" is working.
> Do you _always_ see this behavior?
>
> When you use "ls" directly after connect, do you get some error?
>
> Cheers, Günter
> --
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yes, I do not understand tree connect succeeding but query path info
failing on the very same share path.
The version of cifs module is 1.76 which is fairly recent.

Regards,

Shirish