du checks disk in use
df checks disk free

1) Process has open file handle on large file.
2) Someone / something deletes file.

Space will not show up as in use or free.

3) When process ends, releases handle, or is killed, space is returned as
free.

The "fuser" command has a flag for deleted files, and can help track down
who/what has handles open on deleted files.

[RC]


----- Original Message -----
From: "rachida Ouaraini" <rachida.ouaraini AT CARAMAIL DOT COM>
To: <ADSM-L AT VM.MARIST DOT EDU>
Sent: Wednesday, July 09, 2003 5:30 AM
Subject: AIX question ( " du " and " df " )


> Hi all and thanks in advance for your answers.
>
> My filesystem "/var" grow up rapidly and anormally and when I execute the
command : "du -sk /var" the result
> is :     29653 ( ~ 29 M )
>
> But when I execute the command " df -kP" , I find the result bellow :
>
> Filesystem  1024-blocks  Used  Available Capacity Mounted on
> /dev/hd9var   262144    138940   123204    54%    /var
>
> It means thant about 138 M are used from /var but du -sk
> gives only ~29 M, I don't know where is the difference (138.94 M  - 29 M =
109.94 M) !!
>
> Thank you
>
> Pour gagner une Playstation 2, envoyez un SMS avec le code PS au 61321
(0,35 euro hors co{t du SMS).
>
>