How to add a new vdev to existing pool?

[oX9ke]

I installed Proxmox VE 5.4.3 in a RAIDZ2 configuration with 8x300GB hard drives. This created the following pool:

NAME         STATE     READ WRITE CKSUM
rpool           ONLINE       0         0           0
    raidz2-0  ONLINE       0         0           0
        sda3    ONLINE      0         0           0
        sdb3    ONLINE       0        0           0
        sdc3    ONLINE       0        0           0
        sdd3    ONLINE       0        0           0
        sde3    ONLINE       0        0           0
        sdf3     ONLINE       0        0           0
        sdg3    ONLINE       0        0           0
        sdh3    ONLINE       0        0           0

Now I would like to add 8x10TB hard drives in a new vdev to this existing pool. Is there a way to do this from the GUI?

I tried to do this from the command line with:

zpool create -f -o ashift=12 rpool raidz2 /dev/sdi /dev/sdj /dev/sdk /dev/sdl /dev/sdm /dev/sdn /dev/sdo /dev/sdp

But that gave me an error. Basically I want 1 pool with 2 vdevs.

 

[oX9ke]

So looks like I had the wrong command. The correct command to add a vdev to an existing pool is:

zpool add -f -o ashift=12 rpool raidz2 /dev/sdi /dev/sdj /dev/sdk /dev/sdl /dev/sdm /dev/sdn /dev/sdo /dev/sdp

add

instead of

create