Issues with large files on nfs-mounted filesystems?

[Kris Kennaway]

On Thu, Jun 03, 2004 at 11:42:40AM +0100, Jim Hatfield wrote:
> I've made a large .mpg file on a Linux machine (because some
> tools, such as mplex, are newer than available in FreeBSD ports).
> 
> Here's a directory listing:
> 
> >-rw-r--r--  1 jim users 4388444160 Jun  2 23:15 movie.mpg
> 
> I want to burn it to DVD but the burner is on a BSD box, so 
> I nfs-mount the /home partition. However when I look at the
> same file from FreeBSD 5.1 I get:
> 
> >-rw-r--r--  1 jim  100  93476864 Jun  3 00:15 movie.mpg
> 
> (yes I know there is a time zone issue. I haven't worked 
> out how to set it on Gentoo yet).
> 
> The difference between the sizes is 4294967296, ie 2^32.
> 
> Anyone know if this is an issue with the NFS implementations
> or whether the NFS protocols have a 32-bit size limit?

The mount_nfs manpage tells you:

     -2      Use the NFS Version 2 protocol (the default is to try version 3
             first then version 2).  Note that NFS version 2 has a file size
             limit of 2 gigabytes.

Linux used to, and maybe still does, have stability problems with
NFSv3, so the default was/is to use NFSv2.  FreeBSD has no such
problems :)

Kris
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