[Samba] Oplock problem

John H Terpstra jht at samba.org
Tue May 6 17:13:41 GMT 2003


There is a new chapter in the Samba-HOWTO-Collection.pdf (a work in
progress) on locking. I'd appreciate your feedback on it and any
suggestions you might make. Here is the URL for the in development

- John T.

On Tue, 6 May 2003, Boogerman wrote:

> Hello everybody! I'm (again) after that 30 second lockup some of us are
> experiencing. Today, when I deleted the file pspbrwse.jbf, I experienced the
> problem, and I immediately went to the logs. Here's what I got:
> [2003/05/06 11:06:50, 0] smbd/oplock.c:oplock_break(796)
>   oplock_break: receive_smb timed out after 30 seconds.
>   oplock_break failed for file htdocs/pictures/pspbrwse.jbf (dev = 901,
> inode = 11009, file_id = 2654).
> [2003/05/06 11:06:50, 0] smbd/oplock.c:oplock_break(868)
>   oplock_break: client failure in oplock break in file
> htdocs/pictures/pspbrwse.jbf
> [2003/05/06 11:06:51, 0] smbd/reply.c:reply_lockingX(4626)
>   reply_lockingX: Error : oplock break from client for fnum = 11670 and no
> oplock granted on this file (htdocs/pictures/pspbrwse.jbf).
> Ok, by the looks of it (anyone whith better knowledge of the SMB protocol
> and Samba internals, please correct me if I'm wrong), I would say the client
> requested an oplock on pspbrowse.jbf, then when it deleted it, the server
> issued an oplock break request wich was unanswered by the client... so after
> 30 seconds of receiving no answer, the server timed out the operation. So,
> there appears to be a bug in the client (not responding to the oplock break
> request). I must mention that the client is a Windows XP SP1.
> During those 30 seconds, the server didn't seem to respond to any request
> made by the client (that's why the client locked up). Other clients worked
> fine during those 30 seconds.
> Well, I have described what I think is the issue as best as I could...
> Apparently, It has nothing to do with WebDAV (I have already disabled it,
> and it didn't fix anything).
> Any suggestions?
> Regards,
> Gaston Dassieu Blanchet
> boogerman at interar.com.ar

John H Terpstra
Email: jht at samba.org

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