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

Scott_Purcell at Dell.com Scott_Purcell at Dell.com
Thu May 17 12:29:25 MDT 2012

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
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)

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