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

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Message-ID: <4DE8B449.2000008@suse.de>
Date:	Fri, 03 Jun 2011 15:45:37 +0530
From:	Suresh Jayaraman <sjayaraman@...e.de>
To:	Helge Hafting <helge.hafting@...t.no>
Cc:	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

[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 this time, anything accessing CIFS will pause, including "ls".
> CIFS eventually becomes unstuck, and I will find that my "ls" succeeded,
> but the file copy did not. The file was created, but
> with 0 size.
> 
> Trying to copy the file again results in another stall, and so on.
> 
> 
> When I mount CIFS, I get this message:
> CIFS VFS: Unexpected SMB signature
> 
> This happens with 2.6.38 as well as 2.6.39.
> 
> When writes fail in 2.6.39, I also get:
> CIFS VFS: Send error in Close = -512
> 
> Followed by:
> CIFS VFS: Server servername has not responded in 300 seconds.
> Reconnecting...
> 
> I have also seen
> CIFS VFS: Send error in Close = -512
> and
> CIFS VFS: Send error in read = -13

-- 
Suresh Jayaraman
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