Why is df -Th not showing correct disk usages?

Solution Verified - Updated -

Issue

  • df -Th command for fileystem shows old disk usage and not updated once a 5GB temp01.dbf has been created.
  • For example, the file size from ls -l is listed as 5GB, but df only shows 140MB on the filesystem in use:
# cd /mnt/oracle/temp/D5XSCD
# ls -lrth
total 96K
drwx------ 2 oracle dba       16K Jul 13 09:03 lost+found
-rw-r----- 1 oracle oinstall 5.1G` Nov 15 13:43 temp01.dbf

# df -Th /mnt/oracle/temp/D5XSCD
Filesystem    Type    Size  Used Avail Use% Mounted on
/dev/mapper/vg_17459-lv_temp_17459
              ext3    9.9G  140M  9.8G   2% /mnt/oracle/temp/D5XSCD

Environment

  • Red Hat Enterprise Linux 5, 6

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