Date: Thu, 3 Jun 2004 04:16:19 -0700 From: Kris Kennaway <kris@obsecurity.org> To: Jim Hatfield <subscriber@insignia.com> Cc: freebsd-questions@freebsd.org Subject: Re: Issues with large files on nfs-mounted filesystems? Message-ID: <20040603111619.GA36964@xor.obsecurity.org> In-Reply-To: <gpttb0lkc8ukq5kvkfed38erjfruekb1kd@4ax.com> References: <gpttb0lkc8ukq5kvkfed38erjfruekb1kd@4ax.com>
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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).
>=20
> Here's a directory listing:
>=20
> >-rw-r--r-- 1 jim users 4388444160 Jun 2 23:15 movie.mpg
>=20
> I want to burn it to DVD but the burner is on a BSD box, so=20
> I nfs-mount the /home partition. However when I look at the
> same file from FreeBSD 5.1 I get:
>=20
> >-rw-r--r-- 1 jim 100 93476864 Jun 3 00:15 movie.mpg
>=20
> (yes I know there is a time zone issue. I haven't worked=20
> out how to set it on Gentoo yet).
>=20
> The difference between the sizes is 4294967296, ie 2^32.
>=20
> 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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