Where is my disk space?

[marcel90]

Hello,

I am new to FreeNAS. I am trying it in a VirtualBox right now and got some problem.

1. Added a 6 GB hard drive. It only shows me 4.3 GB.
2. Added a 10 GB hard drive. It only shows me 7.7 GB
3. Merge both to volume I got 12 GB.

Why I lose space?

 

[kdragon75]

We need information. How you configure. Where you look at number? What say zpool list -v?

 

[marcel90]

I added a picture how I created the volume and how the storage manager looks like.

zpool list -v

[root@freenas ~]# zpool list -v
NAME SIZE ALLOC FREE EXPANDSZ FRAG
CAP DEDUP HEALTH ALTROOT
Disk 7.94G 1.23M 7.94G - 0%
0% 1.00x ONLINE /mnt
gptid/072d0fd8-9287-11e8-b1b7-080027f6c6eb 7.94G 1.23M 7.94G -
0% 0%
freenas-boot 9.94G 850M 9.11G - -
8% 1.00x ONLINE -
ada0p2 9.94G 850M 9.11G - -
8%
[root@freenas ~]# cc

 

[anmnz]

FreeNAS reserves 2GB on each disk as a swap partition.

One reason for this is so that you can successfully replace a disk even if your new disk is slightly smaller than the disk it is replacing. This can happen due to variation between disk manufacturers / models / etc.

 

[kdragon75]

I added a picture how I created the volume and how the storage manager looks like.

zpool list -v

[root@freenas ~]# zpool list -v
NAME SIZE ALLOC FREE EXPANDSZ FRAG
CAP DEDUP HEALTH ALTROOT
Disk 7.94G 1.23M 7.94G - 0%
0% 1.00x ONLINE /mnt
gptid/072d0fd8-9287-11e8-b1b7-080027f6c6eb 7.94G 1.23M 7.94G -
0% 0%
freenas-boot 9.94G 850M 9.11G - -
8% 1.00x ONLINE -
ada0p2 9.94G 850M 9.11G - -
8%
[root@freenas ~]# cc

Essentially this looks correct. You may reduce the amount of space reserved for swap but this is strongly discouraged. Please refer to the User Guide for more information and links to useful articles.

 

[marcel90]

Okay good to know:)
Your right it always confiscated 2 GB.