Trying to create a raidz1 with 3 different size disks

[manumonti]

Hi guys,

I'm trying to set up a RAID 5 architecture using proxmox 6.2-4. The server has no hardware support for RAID.

I have three disks of different size (1TB, 640GB, 640GB), so I can't select RAIDZ-1 on the installation menu. I have read on the forum that I have to configure this using zpool tool.

During Proxmox installation I created a RAID1 pool with the two 640 GB disks:

root@pve02:~# zpool list
NAME    SIZE  ALLOC   FREE  CKPOINT  EXPANDSZ   FRAG    CAP  DEDUP    HEALTH  ALTROOT
rpool   592G  1011M   591G        -         -     0%     0%  1.00x    ONLINE  -

root@pve02:~# zfs list
NAME               USED  AVAIL     REFER  MOUNTPOINT
rpool             1010M   573G      104K  /rpool
rpool/ROOT        1009M   573G       96K  /rpool/ROOT
rpool/ROOT/pve-1  1009M   573G     1009M  /
rpool/data          96K   573G       96K  /rpool/data

Now, I want to transform this pool to a RAIDZ-1 pool attaching the disk left. But I don't know if first I have to delete rpool and creates a new one, or if I have to create a partition in the 1TB disk...

What steps should I follow?

Thanks

 

[manumonti]

Finally I get this in the following way:

I installed Proxmox with the GUI and selected the 1TB disk for installing proxmox ve. In options, I select hdsize = 334.8 GB in order to leave free 596.1GB (this is the size of the two remaining disks).

After installing proxmox, I used the CLI in order to format the free space of the 1TB disk and create a partition with the same number of sector that the other two disks.

From here, it was easy. I create a raidz1 pool with zpool with three devices: the partition I created in the 1TB disk, and the entire disk 2 and 3.

This was the result:

root@pve02:~# zpool status
  pool: datapool
 state: ONLINE
  scan: none requested
config:

        NAME        STATE     READ WRITE CKSUM
        datapool    ONLINE       0     0     0
          raidz1-0  ONLINE       0     0     0
            sda     ONLINE       0     0     0
            sdb     ONLINE       0     0     0
            sdc4    ONLINE       0     0     0

errors: No known data errors
root@pve02:~# zfs list
NAME       USED  AVAIL     REFER  MOUNTPOINT
datapool   115K  1.12T     30.6K  /datapool