Re: Why NFS server does not pass lock requests via VFS lock() op?

Re: Why NFS server does not pass lock requests via VFS lock() op?

[Juan Gomez]

Oh ok. Well can we resuscitate this patch? The AFS NAS head example is a
good reason to do this.
If you need any help please let me know and I will be happy to test/adapt
the patch in/to the version that you may want to apply it.
We have one version for 2.4.18 that someone created recently if the one you
have is too old...

Thanks, Juan




|---------+---------------------------------->
|         |           Alan Cox               |
|         |           <alan@lxorguk.ukuu.org.|
|         |           uk>                    |
|         |           Sent by:               |
|         |           linux-kernel-owner@vger|
|         |           .kernel.org            |
|         |                                  |
|         |                                  |
|         |           10/09/02 04:32 PM      |
|         |                                  |
|---------+---------------------------------->
  >-----------------------------------------------------------------------------------------------------------------------------|
  |                                                                                                                             |
  |       To:       Juan Gomez/Almaden/IBM@IBMUS                                                                                |
  |       cc:       nfs@lists.sourceforge.net, Linux Kernel Mailing List <linux-kernel@vger.kernel.org>                         |
  |       Subject:  Re: Why NFS server does not pass lock requests via VFS lock() op?                                           |
  |                                                                                                                             |
  |                                                                                                                             |
  >-----------------------------------------------------------------------------------------------------------------------------|



On Thu, 2002-10-10 at 00:11, Juan Gomez wrote:
>
>
>
>
> Could anyone remind me of why NFS kernel would not pass byte range lock
> requests to the underlying filsystem at the server side?
> I think another person at IBM (Brian?) submitted a patch for this but
such
> patch never got included in the distribution.

I know Matthew had the patches, and I know I looked at them and they
seemed sane enough. But I don't know where they eventually went. Things
like NFS over AFS are going to need it

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

Re: Why NFS server does not pass lock requests via VFS lock() op?

[Trond Myklebust]

>>>>> " " == Juan Gomez <juang@us.ibm.com> writes:

     > Oh ok. Well can we resuscitate this patch? The AFS NAS head
     > example is a good reason to do this.  If you need any help

If you do, make sure that you get the latest patch from Brian and
*NOT* the one that was in earlier versions of the -ac tree. The
latter screws lockd quite royally...

Cheers,
  Trond

Re: Why NFS server does not pass lock requests via VFS lock() op?

[Alan Cox]

On Thu, 2002-10-10 at 00:11, Juan Gomez wrote:
> 
> 
> 
> 
> Could anyone remind me of why NFS kernel would not pass byte range lock
> requests to the underlying filsystem at the server side?
> I think another person at IBM (Brian?) submitted a patch for this but such
> patch never got included in the distribution.

I know Matthew had the patches, and I know I looked at them and they
seemed sane enough. But I don't know where they eventually went. Things
like NFS over AFS are going to need it

Why NFS server does not pass lock requests via VFS lock() op?

[Juan Gomez]

Could anyone remind me of why NFS kernel would not pass byte range lock
requests to the underlying filsystem at the server side?
I think another person at IBM (Brian?) submitted a patch for this but such
patch never got included in the distribution.

I think a patch to pass lock requests to the underlying filesystem does not
affect single node NFS servers and it enables us to
support clustered Linux-based NAS heads over distributed file systems.

Juan