Created a filesystem not occumping the whole diskspace

Hello,

I'm trying to run a fresh OMV installation. I'm still trying to configure my HDD, in which I'd like to have one partition for OMV (EXT4 format) and one for other eventual purpose (probably NTFS)

Firstly, a created a partition with an especific size using fdisk /dev/sba. If I call fdisk -l, I could check the desired size (1.5TB, for example)

Then, I go to OMV and try to create the filesystem (I also tried to format by using mkfs.ext4, but OMV doesn't recognice it). It's work and I can start to operate as normally

But, if I call fdisk -l again, my partition took the whole disk space (2TB)

What it the appropiated way to have a partition working on OMV with an especific size?

Thanks in advance

Thank's you.

It was I've trying to do before. But if it's the rigth way, let's try again, but seeking other options.

This time I used 'parted', as follows, and it works

Then, I logged on OMV and could mount this partition with the specific size, and begin to work with it.

Thanks you very much!