Hello, I'm new here and using ubuntu (or Linux for that matter). I've stumbled upon a problem I can't fix.

So the whole story;
I bought a new box which would serve as a server with different functions. I bought 2x 3TB discs to use in a LVM and I used fdisk first.

I noticed after a while that I only got 2TB per disc and decided to figure out how to get the additional 700GB / disc.
I found out that I had to use gdisk to do this, which I manage to do without a problem. I setup my LVM again with a new vg name (I removed the old one first) and started over with the files I had.
I made a share with smbd and decided to check the total discspace used and it said ~600GB used, but when I checked a webapp it said I had used roughly 900GB.

I then connected to the server and ran some commands;
Code:
df -h
/dev/mapper/storage-storage  5,4T  614G  4,5T  12% /storage
As you can see, the 600GB, along with the % used matches up with what I could see, but if you check total space compared with available it's shy 300GB. I then checked vgdisplay lvdisplay pvdisplay and i could not see any traces of the old one, which i think is the culprit.

Do anyone have any ideas where the 300GB could be used?
Code:
--- Logical volume ---
LV Path                /dev/storage/storage 
  LV Name                storage
  VG Name                storage
  LV UUID                xhPcHn-KzQM-kSyX-j8NS-KG72-80d8-YAj1nK
  LV Write Access        read/write
  LV Creation host, time xbmc, 2013-05-14 19:22:07 +0200
  LV Status              available
  # open                 1
  LV Size                5,40 TiB
  Current LE             1415578
  Segments               2
  Allocation             inherit
  Read ahead sectors     auto
  - currently set to     256
  Block device           252:0
Code:
 --- Volume group ---  
VG Name               storage
  System ID
  Format                lvm2
  Metadata Areas        2
  Metadata Sequence No  4
  VG Access             read/write
  VG Status             resizable
  MAX LV                0
  Cur LV                1
  Open LV               1
  Max PV                0
  Cur PV                2
  Act PV                2
  VG Size               5,46 TiB
  PE Size               4,00 MiB
  Total PE              1430792
  Alloc PE / Size       1415578 / 5,40 TiB
  Free  PE / Size       15214 / 59,43 GiB
  VG UUID               Ir7D5B-kBO6-16NW-jpqJ-qm2h-doRQ-njLW3M
Code:
  --- Physical volume ---  
PV Name               /dev/sdc1
  VG Name               storage
  PV Size               2,73 TiB / not usable 3,44 MiB
  Allocatable           yes (but full)
  PE Size               4,00 MiB
  Total PE              715396
  Free PE               0
  Allocated PE          715396
  PV UUID               aJajek-qSUC-TspZ-YL2f-rw5E-qgGe-nJcz3W


  --- Physical volume ---
  PV Name               /dev/sdb1
  VG Name               storage
  PV Size               2,73 TiB / not usable 3,44 MiB
  Allocatable           yes
  PE Size               4,00 MiB
  Total PE              715396
  Free PE               15214
  Allocated PE          700182
  PV UUID               gSN4sV-GsGj-yImW-4YHN-Ofqo-bOO1-qKb1hG

Thanks in advance!