bin/77260: df behaviour has changed between 4.x and 5.x

[Jamie Heckford]

>Number:         77260
>Category:       bin
>Synopsis:       df behaviour has changed between 4.x and 5.x
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          change-request
>Submitter-Id:   current-users
>Arrival-Date:   Tue Feb 08 12:00:44 GMT 2005
>Closed-Date:
>Last-Modified:
>Originator:     sparc
>Release:        FreeBSD 5.3-RELEASE i386
>Organization:
>Environment:
System: FreeBSD nipples.trident-uk.co.uk 5.3-RELEASE FreeBSD 5.3-RELEASE #5: Fri Jan 21 12:46:39 GMT 2005 sparc at nipples.trident-uk.co.uk:/usr/obj/usr/src/sys/NIPPLES i386


	
>Description:

Behaviour of df has changed between 4.x and 5.x when displaying NFS volumes

According to the manual page NFS volumes should be displayed unless the switch
-t nonfs is used.

>How-To-Repeat:

On 4.x with NFS mounts, do df. Repeat on 5.x. example below:

* 4.x *
=======

admin at cobain:~> uname -v
FreeBSD 4.9-RELEASE #1: Thu Apr 15 10:00:08 GMT 2004     admin at cobain.trident-uk.co.uk:/usr/src/sys/compile/COBAIN 

admin at morrison:~> df
Filesystem  1K-blocks      Used     Avail Capacity  Mounted on
/dev/da0s1a    604718     50564    505778     9%    /
/dev/da0s1e    100750       202     92488     0%    /tmp
/dev/da0s1g  10050414   1699344   7547038    18%    /usr
/dev/da0s1f   6193438   1458468   4239496    26%    /var
procfs              4         4         0   100%    /proc
lennon:/u   538172626 215128824 279989992    43%    /u       <===== NFS SHOWN


* 5.x *
=======

admin at lennon:~> uname -v
FreeBSD 5.3-RELEASE #0: Sun Dec 12 13:42:02 GMT 2004     root at lennon.trident-uk.co.uk:/usr/obj/usr/src/sys/LENNON 

admin at lennon:~> df
Filesystem  1K-blocks      Used     Avail Capacity  Mounted on
/dev/da0s1a   1012974     52206    879732     6%    /
devfs               1         1         0   100%    /dev
/dev/da0s1e   1012974         6    931932     0%    /tmp
/dev/da0s1g 538172626 215265926 279852890    43%    /u
/dev/da0s1f  10154158   1556208   7785618    17%    /usr
/dev/da0s1d   4058062     22098   3711320     1%    /var

admin at lennon:~> df -t nfs
df: /backup stats possibly stale
Filesystem    1K-blocks      Used    Avail Capacity  Mounted on
data1:/backup 229592288 160110224 69252472    70%    /backup



>Fix:

In 5.x add the -t nfs switch to df to display just the NFS volume.

>Release-Note:
>Audit-Trail:
>Unformatted: