Disk partition _root_ has only 0% free

hi ,

im getting this error massage it says " diskmonitor: 011d0004: Disk partition root has only 0% free"

  df -PhT |column -t
Filesystem                             Type   Size  Used  Avail  Use%  Mounted          on
/dev/mapper/vg--db--sda-set.3.root     ext3   380M  380M  0      100%  /

have been digging on file system , incluing user home dir, but can't file any file that consume disk space

any advise what directory should i checked? below output of du -h /

26K     /root
9.7M    /lib64
2.0K    /srv
31M     /sbin
1.5M    /.config.tmp
82M     /etc
4.8G    /var
52M     /lib
4.0K    /mnt
0       /selinux
8.1G    /shared
0       /sys
2.0K    /media
1.2M    /command
13K     /lost+found
223K    /tmp
2.0M    /hotfix
4.5M    /bin
1.8G    /usr
2.0K    /opt
15M     /config
43G     /dev
324K    /home
57G     /

thx