lvm size mismatch?

Hi I am using lvm on debian woody.
The version would be about 1.0.x.

foo:/var# df -h
Filesystem            Size  Used Avail Use% Mounted on
/dev/sda1              11G  8.1G  1.9G  81% /
/dev/vol/var           18G   16G  2.7G  85% /var
/dev/vol/home         4.9G  1.8G  3.1G  36% /home
/dev/vol/tmp          500M   61M  439M  13% /tmp
/dev/extra/data        70G  9.5G   60G  14% /data

foo:/var# du . -sh
5.4G    .
foo:/var#

Please take a look at /dev/vol/var which is 18G big and it says 16G is already used.

But when I check the disk usage by running du command, it shows only 5.4G is used.

Then...where does this size mismatch come from?

-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-
  Shawn Soon-Son Kwon, founder and leader of KLDP
           ( http://kldp.org ,  http://kldp.net )
  Phone: 82-16-535-7282  Homepage: http://kldp.org/~kss
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iirc, df looks at the filesystem's free space maps, while du sums the file sizes as listed in the directories. I'd guess that you've got 10.6G marked as "in use" in the free space maps that isn't referenced by any inode. 'fsck -f /var' should fix it; remember that you'll have to unmount /var first.

David Johnston <[email protected]>
Little Bald Consulting, LLC