My cloud is 2gb instated of 2tb

Having search problem in my cloud i pooled out the power when i put i on
The cloud showed 2gb instead of 2tb
I enter to ssh mode and found out that parttin mda4 not indicating file system ext4

WDMyCloud:~# parted -l
Model: ATA WDC WD20EFRX-68E (scsi)
Disk /dev/sda: 2000GB
Sector size (logical/physical): 512B/4096B
Partition Table: gpt

Number Start End Size File system Name Flags
3 15.7MB 528MB 513MB linux-swap(v1) primary
1 528MB 2576MB 2048MB ext3 primary raid
2 2576MB 4624MB 2048MB ext3 primary raid
5 4624MB 4724MB 99.6MB primary
6 4724MB 4824MB 101MB primary
7 4824MB 4826MB 1049kB primary
8 4826MB 4828MB 2097kB primary
4 4828MB 2000GB 1996GB primary

Model: Linux Software RAID Array (md)
Disk /dev/md1: 2048MB
Sector size (logical/physical): 512B/4096B
Partition Table: loop

Number Start End Size File system Flags
1 0.00B 2048MB 2048MB ext3

I tray the command e2fsck -b 32768 /dev/sda4
Did not help

WDMyCloud:~# e2fsck -b 32768 /dev/sda4
e2fsck 1.42.5 (29-Jul-2012)
/dev/sda4 contains a file system with errors, check forced.
Pass 1: Checking inodes, blocks, and sizes
Journal inode is not in use, but contains data. Clear? yes

Pass 2: Checking directory structure
Pass 3: Checking directory connectivity
Unconnected directory inode 116916225 (/lost+found/???)
Connect to /lost+found? yes
Unconnected directory inode 60555265 (/lost+found/???)
Connect to /lost+found? yes
Unconnected directory inode 68681729 (/lost+found/???)
Connect to /lost+found? yes
Pass 4: Checking reference counts
Inode 11 ref count is 2, should be 5. Fix? yes
Inode 60555265 ref count is 16, should be 15. Fix? yes
Inode 68681729 ref count is 3, should be 2. Fix? yes
Inode 116916225 ref count is 12, should be 11. Fix? yes
Pass 5: Checking group summary information
Killed

Adding more swap memory did not help

Any suggestion will be apriciated

If i can delete the partition sda4 and create new
any sugestion how to do it

Thanks
Shlomo