Change ZFS (Software RAID)

[Iosif Bancioiu]

Hi,

I am new when it comes to servers, virtualization and hardware allocation. When I installed Proxmox 6.1-8, I chose RAID 0 (Software), having 2 disks.

Now what I kind of want to do is to transform that RAID 0 into RAID 1, so switching.

Would that be possible?

I have to mention that I have 1 SSD of 500GB and 1HDD of 2 TB, currently used overall is less than 100 GB since I did not create yet all of my VMs, but reinstalling ProxMox would not be an option since it took me 5 days to do all the configs / setup for my hardware.


Thanks!

Br,
Iosif

 

[Dominic]

Hi!

Are you aware that creating a mirror on two different size disks is not ideal?

➜  ~ zpool create -o ashift=12 tank mirror /dev/sdb /dev/sdd
invalid vdev specification
use '-f' to override the following errors:
mirror contains devices of different sizes

You can override that, but then you have only the smaller size available.

 

[Iosif Bancioiu]

@Dominic

Hi,

Yes, I know it will reduce the available space.

How should I do with the command that you gave me.

1) Is there a way during the setup process to do that
2) If answer to 1 is no, then what setup should I have, ext4 only on the smaller disk and all the stuff should be installed there, then from Shell run the command to create the pool? Or should I have a RAID0 with only one disk and the run the command.

Thanks!

 

[Dominic]

Hi!

The Proxmox VE installer will not let you use different sized disks in ZFS RAID1. Alternatively, you could install Proxmox VE on top of Debian Buster. And follow something like this guide for the Debian Buster install.