Re: Solved - How to change the FSINFO for nfsd?

From: P.V.Anthony
Date: Sat May 17 2008 - 13:57:57 EST

Quoting "J. Bruce Fields":
I think you'reprobably barking up the wrong tree, but the max file size
as returned by fsinfo is set in fs/nfsd/nfs3proc.c:nfsd3_proc_fsinfo().

Just in case someone needs to know this information. Please note that I am not a
programmer. I am just hacking away.

Most of the credit for the hack goes to the person in the forum mentioned below
for finding the Mac NFS behavior.

The changes done seem to work well.

I am dissapointed that Apple made changes to NFS to a point that we have to use an Apple NFS. I thought that NFS is open. Anyway with these changes, a Linux server can be used.

Anyway this problem only happens from with in the video editing application,
Final Cut Pro, an Apple product. I hope someday a good video editing application
comes to Linux. I am willing to pay for Linux video editing application. It must
be good that is.

Anyway here is the patch done.

------------------- start ------------------------------

pv at videoserver2 ~ $ diff -ruN
--- /usr/src/linux-2.6.22-gentoo-r8/fs/nfsd/ 2008-05-09
13:07:19.000000000 +0800
+++ /usr/src/linux-2.6.22-gentoo-r8/fs/nfsd/nfs3proc.c 2008-05-13
23:54:56.000000000 +0800
@@ -555,7 +555,7 @@
resp->f_wtpref = max_blocksize;
resp->f_wtmult = PAGE_SIZE;
resp->f_dtpref = PAGE_SIZE;
- resp->f_maxfilesize = ~(u32) 0;
+ resp->f_maxfilesize = 0xffffffffffffffff;
resp->f_properties = NFS3_FSF_DEFAULT;

nfserr = fh_verify(rqstp, &argp->fh, 0, MAY_NOP);
@@ -570,7 +570,7 @@
if (sb->s_magic == 0x4d44 /* MSDOS_SUPER_MAGIC */) {
resp->f_properties = NFS3_FSF_BILLYBOY;
- resp->f_maxfilesize = sb->s_maxbytes;
+ resp->f_maxfilesize = 0xffffffffffffffff;


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