Different output by df and du

Posted by user1263746 on Server Fault See other posts from Server Fault or by user1263746
Published on 2013-06-25T07:07:14Z Indexed on 2013/06/25 10:23 UTC
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redhat

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partition

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df

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du

I have an old RHEL 5.5 Box,

When I fire df -kh I see that /var is of 49 GB with 100 % usage.

But then I go inside the /var

cd /var

and I fire

du -kh

I see that only total 300 MBs are used.

I am not able to get it. Is is possible that this partition is shared with different partition?

I see that /opt is also of 49 GB. I think that they are same partition.

I need to free /var to start mysql but there is hardly anything to be deleted.

Any pointers?

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