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I can see the used disk quota on server is 81G for partition /dev/sda3 mounted to '/' as follows.

Filesystem      Size  Used Avail Use% Mounted on
/dev/sda3       106G   81G   20G  81% /
tmpfs           1.9G     0  1.9G   0% /dev/shm
/dev/sda1       477M   52M  400M  12% /boot
tmpfs           1.0G     0  1.0G   0% /var/lib/mysqltmp
/usr/tmpDSK     4.0G  183M  3.6G   5% /tmp

But when Iam checking with the '/' directory by executing du -sh command it is taking only 17G of disk space, can any one advice where this remaining space is utilized, any advice ? Iam using CentOS release 6.7 (Final)

Tom
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  • +1 for duplicate. That question has already most likely answer: `lsof | grep deleted` – rvs Feb 19 '16 at 10:49

1 Answers1

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maybe processes have open handles on large files (like a dropped database). files may then seem deleted but space is not reclamined before all handles on these files are closed.

lsof may be your friend here.

Daniel Nachtrub
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