Disk Usage is showing 0.00 or is too low (Error with system Quotas)

hello

my Disk Space (mb) is shown in DA too small



this is tha actual

Filesystem Size Used Avail Use% Mounted on

/dev/md3 1.8T 269M 1.7T 1% /home



and DA shown Disk Space (mb) 1.2666 !!!



so i try http://ift.tt/1cvAJZe



by typing df -h shh:



Filesystem Size Used Avail Use% Mounted on

rootfs 20G 3.5G 15G 19% /

/dev/root 20G 3.5G 15G 19% /

devtmpfs 32G 0 32G 0% /dev

tmpfs 6.3G 324K 6.3G 1% /run

tmpfs 5.0M 0 5.0M 0% /run/lock

tmpfs 13G 0 13G 0% /dev/shm

/dev/md3 1.8T 269M 1.7T 1% /home



so i run : /usr/sbin/repquota /home

but result:

repquota: Mountpoint (or device) /home not found or has no quota enabled.

repquota: Not all specified mountpoints are using quota.



so what can i do ?

Disk Usage is showing 0.00 or is too low (Error with system Quotas)