Extending LVM - HowTo?

[iPanini]

Hello fellow Proxmoxers,

A couple of months ago I set up my first Proxmox system. At the time I had some issues a one of the hard drives that I used was failing from day one. (It has been replaced under warranty)
The drives are Toshiba 8 TB NAS drives.
Anyway, today I find that I'm running low on storage, so I want to add a new extra drive.
It is only after adding the new (3rd) drive that I realize that the first 2 drive don't seem to be configured as a LVM.
At least, in my understanding an LVM consisting of 2 identical drives, depending on your choice during set-up, can span the 2 drives, thus creating a storage that is the sum of the 2 drive (approximately).

Now my questions:
Can I extend my LVM with the newly added 3rd drive?
Can I make changes in such a way that my 3 drives will form my LVM, and be approx. the size of the 3 drives summed together (3x 8TB = LVM = 24 TB)?
Can this be done using the Proxmox GUI or do I need to do this using the CLI?

Thanks a lot for your help!

 

[Richard]

Can I extend my LVM with the newly added 3rd drive?

Yes

Can I make changes in such a way that my 3 drives will form my LVM, and be approx. the size of the 3 drives summed together (3x 8TB = LVM = 24 TB)?

Yes

Can this be done using the Proxmox GUI or do I need to do this using the CLI?

Use CLI; assuming your new drive is seen as /dev/sdc and you want to add it to current volume group group1 run:

pvcreate /dev/sdc
vgextend group2 /dev/sdc