Messages in this thread | | | Date | Fri, 3 Jun 2011 06:50:06 -0400 | From | Jeff Layton <> | Subject | Re: [2.6.39] CIFS write failures where 2.6.38 works |
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On Fri, 03 Jun 2011 15:45:37 +0530 Suresh Jayaraman <sjayaraman@suse.de> wrote:
> [Cc linux-cifs@vger.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 > >
I get this too on every mount using signing. It would be nice to fix that but it's probably not related to the problem.
> > 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 > >
-512 is -ERESTARTSYS which probably means that it got a signal.
> > Followed by: > > CIFS VFS: Server servername has not responded in 300 seconds. > > Reconnecting... > >
So the server may not be responding to SMB echoes.
> > I have also seen > > CIFS VFS: Send error in Close = -512 > > and > > CIFS VFS: Send error in read = -13 >
What sort of server is this? We'll probably need to see some wire captures or debug logging to understand what's happening. It might be good to open a bug at bugzilla.samba.org or bugzilla.kernel.org so we can track progress on this.
-- Jeff Layton <jlayton@redhat.com>
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