linux-kernel - Re: [2.6.39] CIFS write failures where 2.6.38 works

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Message-ID: <BANLkTik15fEwzS5m6xWvMxKesYkQGArfPw@mail.gmail.com>
Date:	Sat, 4 Jun 2011 07:35:25 -0500
From:	Shirish Pargaonkar <shirishpargaonkar@...il.com>
To:	Helge Hafting <helge.hafting@...t.no>
Cc:	Suresh Jayaraman <sjayaraman@...e.de>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	linux-cifs <linux-cifs@...r.kernel.org>
Subject: Re: [2.6.39] CIFS write failures where 2.6.38 works

On Fri, Jun 3, 2011 at 10:11 AM, Helge Hafting <helge.hafting@...t.no> wrote:
> On 03. juni 2011 12:15, Suresh Jayaraman wrote:
>>
>> [Cc linux-cifs@...r.kernel.org]
>>
>> On 06/01/2011 03:41 PM, Helge Hafting wrote:
>>>
>>> At work I use cifs for accessing a windows server. This has worked fine
>>> for a long time, up to and including Debian's 2.6.38-2.
>>>
>>> I just installed Debians's 2.6.39-1, and had to give up on it.
>>> Mounting CIFS works, and I can see the files. But if I
>>> try to make a new file (with cp), I get a long delay.
>>
>> What is the security mechanism you are using? If you seeing the problem
>> with ntlm, could you try using ntlmv2 and see whether the problem is
>> reproducible?
>
> In the beginning, I did not specify the mechanism. So, whatever the default
> is.
>
> The fstab entry was like this:
> \\servername\resource /mountpoint cifs
> domain=MYDOMAIN,credentials=/etc/fstabcred,rw,noauto,iocharset=utf8,uid=username,gid=group,sockopt=TCP_NODELAY,users,file_mode=0640,dir_mode=0750,relatime
> 0 0
>
> I looked at cifs options, and tried to add "sign" and "sec=ntlmv2i". It made
> no difference. Still failure with 2.6.39, and mounting with these new
> options works fine with 2.6.38
>
> Helge Hafting
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>

Yes, I think wireshark trace would be really useful.

Regards,

Shirish
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