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Proxmox Fractus Node Setup

Credit to community members Mowat and Gus Diaz. For questions, visit #community-support on Discord.

Follow these steps to add a dedicated Thunder (storage) pool and virtual disk on Proxmox for your FluxNode (Fractus) setup.

1. SSH into Proxmox Host​

ssh root@<proxmox_ip>

2. Identify and Initialize Disks​

  • In the Proxmox GUI, note disk device names (e.g., /dev/sdf, /dev/sdg, /dev/sdh).

  • Initialize partition 1 on each disk:

    sgdisk -N 1 /dev/sdf
    sgdisk -N 1 /dev/sdg
    sgdisk -N 1 /dev/sdh

3. Create LVM Volume Group & Thin Pool​

vgcreate tdata1 /dev/sdf1 /dev/sdg1 /dev/sdh1
lvcreate -n lvtdata1 -T -l 100%FREE tdata1

4. Add LVM-Thin Storage in Proxmox GUI​

  1. Datacenter → Storage → Add → LVM-Thin
  2. ID: thunderdata1
  3. Volume group: tdata1
  4. Thin pool: lvtdata1

5. Attach Virtual Disk to Node​

  • Select your FluxNode VM/CT → Hardware → Add → Hard Disk
  • Bus: SCSI, Storage: thunderdata1, Size: 10000 GiB

6. Prepare Disk Inside the Node​

sudo sgdisk -N 1 /dev/sdb
sudo mkfs.ext4 -E nodiscard /dev/sdb1
sudo mkdir /thunder
sudo blkid /dev/sdb1    # copy the UUID
sudo nano /etc/fstab    # add:
# UUID=<your-uuid> /thunder ext4 rw,user,auto 0 0
sudo mount /thunder
df -h | tail -n1

7. Enable Thunder Mode & Benchmark​

  1. Run multitoolbox → Option 11: Reconfigure Flux OS → enable Thunder Mode

  2. Reboot and re‑benchmark:

    sudo reboot now

8. Scale Across Nodes​

Repeat steps 5–7 on other nodes until your thin pool is fully utilized.