linux-kernel - Re: How to change the FSINFO for nfsd?

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Message-ID: <20080509042238.GC21408@fieldses.org>
Date:	Fri, 9 May 2008 00:22:38 -0400
From:	"J. Bruce Fields" <bfields@...ldses.org>
To:	"P.V.Anthony" <pvantony@...gnet.com.sg>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: How to change the FSINFO for nfsd?

On Fri, May 09, 2008 at 01:05:17AM +0800, P.V.Anthony wrote:
> Hi,
> 
> Currently a gentoo linux server is used as a nfs server for some Mac OS
> X clients. These Mac OS X clients are doing video editing.
> 
> Currently the video are captured directly to the NFS mounts.
> 
> Here is the problem. The video files are broken into 2GB files. This
> because the video editing software(Final Cut Pro) breaks the files into
> 2GB sizes. It does not seem that the Mac OS X is not doing the breaking
> up of files. It is the video editing software.
> 
> Some commercial company found an interesting behaviour. All the Mac OS X
> NFS server FSINFO response in which the max file size is set to 'FFFF
> FFFF FFFF FFFF' (all '1's).
> 
> The link about the above information can be found at this link below.
> Read towards the bottom of the link.
> http://forums.creativecow.net/thread/8/975362
> 
> I really would like to know where to change in the NFS source code so
> that the FSINFO response from the server in which the max file size is
> set to 'FFFF FFFF FFFF FFFF' (all '1's).

I think you're probably barking up the wrong tree, but the max file size
as returned by fsinfo is set in fs/nfsd/nfs3proc.c:nfsd3_proc_fsinfo().

--b.
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