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Ubuntu using 100% disk space but I can only find 9.5GB

Britt Thompson
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Last Modified: 2012-05-10
I have an Ubuntu x64 9.10 server without a GUI and it's completely out of disk space. I've used all of the conventional methods for locating the problems files/directories and I can only find 9.5GB out of 250GB being used. Running a du -hca / plus some other commands I've found all find the same tiny amount of data usage.

The server is running MySQL / Apache with a heavy MySQL database but the database and logs only uses about 6.5GB of space.
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arnoldEE Topic Advisor, IT Consultant
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Britt ThompsonSr. Systems Engineer
Top Expert 2009

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Commented:
Filesystem           1K-blocks      Used Available Use% Mounted on
/dev/mapper/oasis-root
                     229698772 220714364         0 100% /
udev                   2026528       184   2026344   1% /dev
none                   2026528         0   2026528   0% /dev/shm
none                   2026528        40   2026488   1% /var/run
none                   2026528         0   2026528   0% /var/lock
none                   2026528         0   2026528   0% /lib/init/rw
/dev/sda5               233335     43774    177113  20% /boot


Definitely just / that's full here
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Britt ThompsonSr. Systems Engineer
Top Expert 2009

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Commented:
Ok...I ran the lsof and the tmp files are basically nothing. But, I do see a great deal of "(deleted)" files...how do I purge these files? Also, by chance, I see a directory I'd like to recover....how do I do that?

See my attached lsof. Thanks.
lsof.txt
Britt ThompsonSr. Systems Engineer
Top Expert 2009

Author

Commented:
I figured it out...I'm an idiot this time. I was excluding the directory where my external RAID is mounted and discovered the RAID wasn't mounted. A huge backup RAN to that directory filling up the hard drive.

I ran "du -chx" to determine that.

Thanks for the help...lsof is a nice one to know.

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