[SOLVED] Error with disk space allocation

[white_mike]

Hello,
I must install a new server and we take the choice to go on Proxmox (with subscription when we solved this issue with space xD)

When I start the installation of my serveur I choose "Raidz-1" to install on 3xSSD 250Go.
Raidz-1 = Raid5 so NumbersDisk -1 right ?

I have
DATAPOOL = mirror of 2 HDD and it's ok (ZFS too)
rpool = Raidz-1 of 3 SSD 250Go

NAME       SIZE  ALLOC   FREE  EXPANDSZ   FRAG    CAP  DEDUP  HEALTH  ALTROOT
DATAPOOL  3.62T   504K  3.62T         -     0%     0%  1.00x  ONLINE  -
rpool      696G  1.31G   695G         -     0%     0%  1.00x  ONLINE  -

As you can see, he display as FREE 695Go... Not possible in array of raid5.

I have the same settings on my freebsd (3 HDD 2To) and when I use zpool list he display only +- 3.6To
as he has to do it.

I forgot somethings during my installation of Proxmox ?

 

[mailinglists]

What does zpool status show?

 

[wolfgang]

Hi,

This is correct because ZFS on Linux shows the raw values when you use RaidZ<X>.
so 3x240 GB ~= 696GB
You can't calculate the real usage before they get written.
Only with Raid 1 or Raid 2, you can calculate the real free space.

 

[white_mike]

In fact, it's little confusion due to the display on Proxmox.

Thank's guys !