newnfs client and statfs

[Rick Macklem]

> 
> > I'll try and make my Solaris10 box get to -ve frees and then see
> > what
> > it puts on the wire. After that, I'll start a discussion on
> > freebsd-fs@
> > about how they think a FreeBSD server should behave when f_bavail
> > and/or
> > f_ffree are negative.
> 
> The result on Solaris would be interesting. Does Solaris still support
> ffs? You said later that you couldn't get it to generate negative
> values.
> 
Well, I just did the reverse (ran a FreeBSD FFS disk out of space so
it reported a -ve free and mounted in on Solaris10). Here are the
"df" outputs (I used "df -k" on Solaris, since that's a compatible format):

FreeBSD-current server (nfsv4-newlap):
Filesystem  1K-blocks    Used   Avail Capacity  Mounted on
/dev/ad4s3a   2026030  671492 1192456    36%    /
devfs               1       1       0   100%    /dev
/dev/ad4s3e   4697030 4544054 -222786   105%    /sub1
/dev/ad4s3d   5077038  641462 4029414    14%    /usr

Solaris10 client:
Filesystem            kbytes    used   avail capacity  Mounted on
/dev/dsk/c0d0s0      3870110 2790938 1040471    73%    /
/devices                   0       0       0     0%    /devices
ctfs                       0       0       0     0%    /system/contract
proc                       0       0       0     0%    /proc
mnttab                     0       0       0     0%    /etc/mnttab
swap                  975736     624  975112     1%    /etc/svc/volatile
objfs                      0       0       0     0%    /system/object
/usr/lib/libc/libc_hwcap1.so.1 3870110 2790938 1040471    73%    /lib/libc.so.1
fd                         0       0       0     0%    /dev/fd
swap                  975112       0  975112     0%    /tmp
swap                  975140      28  975112     1%    /var/run
/dev/dsk/c0d0s7      5608190 4118091 1434018    75%    /export/home
nfsv4-newlap:/sub1   4697030 4544054 18014398509259198     1%    /mnt

as you can see, Solaris10 doesn't assume it's negative and
reports lottsa avail.

I don't have a Linux client handy, so I can't do the same test
with Linux, rick