nfs filesystem size

[Marc Wiz]

On Mon, Apr 21, 2003 at 02:15:37PM -0500, Dan Nelson wrote:
> In the last episode (Apr 21), Jesse Geddis said:
> > We have a NetApp FAS940 with a current storage size of 1.266 TB. FreeBSD is
> > reporting the following:
> > 
> > Filesystem              Size   Used  Avail Capacity  Mounted on
> > /dev/da0s1a             2.0G    56M   1.8G     3%    /
> > /dev/da0s1f             9.8G   1.9G   7.1G    21%    /usr
> > /dev/da0s1g             5.2G    82M   4.7G     2%    /usr/home
> > /dev/da0s1e              15G   161M    13G     1%    /var
> > procfs                  4.0K   4.0K     0B   100%    /proc
> > 10.0.0.100:/vol/www01 -811.2G   465G   771G   -57%    /www
> >
> > is this a limitation of how large a filesystem freebsd can report or
> > are we running into something else that is fixable here? Thanks in
> > advance.
> 
> I think I traced it to a variable overflow in nfs_vfsops.c:nfs_statfs().
> I have a 1.4TB filesystem that occasionally (but not always) goes
> negative too.  It just affects the results of the statfs/statvfs()
> calls, so the only thing it really hurts is 'df'.

According the to the NFS v3 spec from "NFS Illustrated" page 212
the return from FSSTATE (Get Dynamic Filesystem Information) states
that the total size of the file system and the amount of free space
(both in bytes) is an unsigned int 64.

Marc
-- 
Marc Wiz
marc at wiz.com
Yes, that really is my last name.