df showing invalid output

[Will McDonald]

On 05/08/05, Anish Mathew <nedumannilanish at yahoo.co.uk> wrote:
> Now  du -sh /opt output
> 
> 3.1G    /opt
> 
> This is also correct.
>
>  Since du output shows used space as 3.1 GB i tried to
> copy again a file of size 2GB to /opt.. but failed
> with no space left on device.
> 
> How can i solve this problem.

Have you run out of inodes in that filesystem? It's unlikely that's
the cause but worth checking with

# df -i

Generally though, when df and du are giving you differing results it's
because some process is holding open an inode even though you think
the file's moved.

http://www.google.co.uk/search?hl=en&q=du+and+df+show+different+results&meta=

Try looking for suspect processes with files open in /opt with...

# lsof | grep '/opt'

Will.