I am running CentOS. I thought it was considering the files in my mounted share, but there's more files there than the hard drive has space. Here's the results of df -h:

Filesystem Size Used Avail Use% Mounted on
/dev/mapper/VolGroup00-LogVol00
123G 115G 1.6G 99% /
/dev/cciss/c0d0p1 99M 19M 75M 21% /boot
tmpfs 3.9G 0 3.9G 0% /dev/shm
//192.168.5.68/recordings
280G 188G 93G 67% /mnt/callito

Listing by folder: du -ks /* | sort -nr | head:

191981794 /mnt
2704196 /var
2398380 /usr
224520 /lib
97864 /etc
33988 /sbin
20484 /lib64
13614 /boot
8120 /bin
208 /root

What am I missing? Thank you!

Why didn't you use the same size option in both du commands? Do you expect us to do the conversion?

It seems obvious that you have stuff in your /mnt directory that is not on a mounted partition so it is on the system (root) partition. Those files could be hidden by mounted partitions. Unmount everything that is mounted in /mnt and then look for files in that directory tree.

Hi -

1. Here's your output, wrapped in [code] tags:
2. You're using 115 of 123GB on "root". Your question is "who on root is the space hog?"

3. The answer appears to be "/mnt".
a) "mnt" is using the most space
... but ...
b) "mnt" really shouldn't be using ANY space.
It should be "empty" - a location where you can "mount" other filesystems!

4. Conclusion -
a) I'm guessing that you probably MEANT to mount some filesystem in "/mnt"
b) ... but the mount failed...
c) ... you didn't catch the mount failure
d) ... and you inadvertantly started writing gigabytes there

5. SUGGESTION:
IN SUMMARY:
I believe you're probably out of disk space because you might accidentally be writing to "/mnt", instead of to a filesystem you think you have MOUNTED in "/mnt".

Make sense?

Please keep us posted what you find!

191981794 is 183GB, /mnt/callito occupies 188GB, therefore it is pretty safe to assume that the reported usage for /mnt is mostly on the cifs share, not the local filesystem.

Have a look for hidden files/directories at the root level that the * would miss, next time you run du please add the -x and -h options.

Check /var/log.

I just dealt with a problem of log files gone mad. Logrotate was the answer.

I've been Linuxing for > five years and done a lot of distro hopping. First time I've run into this.