[Lvlug] df vs. du

[Mark]

On Monday 17 April 2006 10:09 pm, Randy Kramer wrote:
> I ran out of space on /home tonight.  Found ~49M being used
> in /home/rhk/.rdoc.  Afterwards, du /home tells me I'm using 31M, df tells
> me I'm using 195M.
>
> What am I missing?

I just ran into this on a RH 9 server.  I tried using the -S (synch before 
read) with df but it didn't help.  It seemed to just take some time before df 
caught up with the system.

I haven't looked into how df works but it is way to fast to be reading the 
drive contents like du does so I am assuming that the data that df uses is 
contained in a table somewhere that doesn't get updated immediately.

-Mark