Server :: /usr Missing Free Space?

Aug 23, 2010

just some time ago, my /usr partition's used space is started to increase rapidly, and currently it reached 17.5GB. We put /usr as a separate partition (/dev/sda2)

So when we do "df" this is the result:

Code:
#df
...
/dev/sda2 20315844 17612628 1654576 92% /usr
...

But what makes me puzzled is if I do "du", I only get 4.3GB instead of 20GB as "df" reported.

Code:
# du -csh /usr
4.3G /usr
4.3G total

So I'm missing approx 13GB here. My question is:where does my 13GB missing?

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[code]....

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