misc/78529: 'df' shows wrong info about hard drive after carrying hard drive from one PC to other.

[Taras Savchuk]

>Number:         78529
>Category:       misc
>Synopsis:       'df' shows wrong info about hard drive after carrying hard drive from one PC to other.
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Mon Mar 07 13:00:14 GMT 2005
>Closed-Date:
>Last-Modified:
>Originator:     Taras Savchuk
>Release:        5.3-RELEASE and 5.3-STABLE
>Organization:
>Environment:
FreeBSD server 5.3-RELEASE FreeBSD 5.3-RELEASE #1: Tue Nov 23 16:08:51 MSK 2004     root at temp.copyco.ru:/usr/obj/usr/src/sys/COPYCO-GW  i386
>Description:
Under my 5.3-STABLE I386 single-processor box I formatted 80GB IDE hard drive and wrote on it a lot of data. Then I installed it on another I386 5.3-RELEASE I386 two-processor box and got this output of df:
-------------------------------------------
[15:32]@server$df
Filesystem  1K-blocks    Used    Avail Capacity  Mounted on
/dev/da0s1a    507630   57962   409058    12%    /
devfs               1       1        0   100%    /dev
/dev/da0s1d   1012974    7646   924292     1%    /tmp
/dev/da0s1e  10154158 3934302  5407524    42%    /usr
/dev/da0s1f  22567966 7648782 13113748    37%    /var
/dev/ad1s1d  20301670       4 18677534     0%    /mnt20        
/dev/ad1s2d  55409810       6 50977020     0%    /mnt60
devfs               1       1        0   100%    /var/named/dev
[15:39]@server$du -h /mnt60
2,2G    /mnt20
[15:39]@server$du -h /mnt60
 36G    /mnt60
-----------------------------------------------------------------
/mnt20 and /mnt60 - that hard drive.
'du -h' shows write info about used disk space, but 'df' says, that I used only 4K and 6K of disk space - it's wrong, as you can see.
>How-To-Repeat:
You can try to attach IDE hard drive from one I386 5.3 PC to other and look at output of 'df' and 'du'.
>Fix:
      
>Release-Note:
>Audit-Trail:
>Unformatted: